LaTeX 各种命令，符号

分手后的思念是犯贱 2022-12-02 10:46 250阅读 0赞

## 函数、符号及特殊字符 ##

### 声调 ###

<table> 
 <tbody> 
  <tr> 
   <th>语法</th> 
   <th>效果</th> 
   <th>语法</th> 
   <th>效果</th> 
   <th>语法</th> 
   <th>效果</th> 
  </tr> 
  <tr> 
   <td>\bar{x}</td> 
   <td><img alt="\bar{x}" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2MvOS80L2M5NDdhNWJjYzA2NTkyZjM3ZjZiMWM0ZjJlZDU3ZGVhLnBuZw?x-oss-process=image/format,png"></td> 
   <td>\acute{\eta}</td> 
   <td><img alt="\acute{\eta}" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzgvZi9mLzhmZjA1NTE0NTM5NmEyZmZlZmFjZWEwYjE4ZWMzZmRhLnBuZw?x-oss-process=image/format,png"></td> 
   <td>\check{\alpha}</td> 
   <td><img alt="\check{\alpha}" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2EvYy80L2FjNGEzMWVlNTg3NGRjNTA0NDU5MGVlZGFlN2E0OGM0LnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td>\grave{\eta}</td> 
   <td><img alt="\grave{\eta}" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzkvMS9mLzkxZjFjZjk4NzA5ZWU1YmQ0MzgwYjA1ZDA0Y2UyNjBhLnBuZw?x-oss-process=image/format,png"></td> 
   <td>\breve{a}</td> 
   <td><img alt="\breve{a}" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzUvOC81LzU4NTY1YzY5ZmE2ZTg5NWVhMTFlNTdmZmRiZTdkNGNkLnBuZw?x-oss-process=image/format,png"></td> 
   <td>\ddot{y}</td> 
   <td><img alt="\ddot{y}" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzUvOC83LzU4Nzc5ZmY1ZTM5MzJjNDM1NDVhOGQ4MTE0Mzg0ZGQ2LnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td>\dot{x}</td> 
   <td><img alt="\dot{x}" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzUvOC80LzU4NGJkZDZiYmYzYjIyOTAxNjMxYzk0YzEyZjA5MzMyLnBuZw?x-oss-process=image/format,png"></td> 
   <td>\hat{\alpha}</td> 
   <td><img alt="\hat{\alpha}" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzMvZi9lLzNmZTliMjExNDczMDY1Njc2ZTFiODA0OGUyMWI5NzQzLnBuZw?x-oss-process=image/format,png"></td> 
   <td>\tilde{\iota}</td> 
   <td><img alt="\tilde{\iota}" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzUvZC9iLzVkYjEyOWVjYWMwMzQyM2QxOWU0NTNkOWFkYThhMGU4LnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
 </tbody> 
</table>

### 函数 ###

<table> 
 <tbody> 
  <tr> 
   <th>语法</th> 
   <th>效果</th> 
   <th>语法</th> 
   <th>效果</th> 
   <th>语法</th> 
   <th>效果</th> 
  </tr> 
  <tr> 
   <td>\sin\theta</td> 
   <td><img alt="\sin\!\theta" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzAvOS8zLzA5MzcwYWM2MGZiNzVmNjU1NWFhZDZjZTZmYTUxMjg0LnBuZw?x-oss-process=image/format,png"></td> 
   <td>\cos\theta</td> 
   <td><img alt="\cos\!\theta" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzMvOS8yLzM5MjJmMmM1ZjU5ZWZkZTkwNGE4ZTcwNDMzZTNjMDE0LnBuZw?x-oss-process=image/format,png"></td> 
   <td>\tan\theta</td> 
   <td><img alt="\tan\!\theta" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzgvOS9lLzg5ZWI2YjE0NTBkOWIyNmQyMDcxZDFmNjRhNTY3YWE0LnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td>\arcsin\frac{L}{r}</td> 
   <td><img alt="\arcsin\frac{L}{r}" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzUvOS9jLzU5YzQ3ZmJkYTQ3ZWQ2ZGExMzg0MWU3NzdkNDlkZDRlLnBuZw?x-oss-process=image/format,png"></td> 
   <td>\arccos\frac{T}{r}</td> 
   <td><img alt="\arccos\frac{T}{r}" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzcvOS9iLzc5YmVkNWZkOGFhNzQwNWQ5OGY2MzlkZDFkZmJiNDI3LnBuZw?x-oss-process=image/format,png"></td> 
   <td>\arctan\frac{L}{T}</td> 
   <td><img alt="\arctan\frac{L}{T}" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzkvNy8xLzk3MTQzODQ2ZDQ1NDMyMTUxMTlkNTY5MzY0OTc5YzJhLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td>\sinh g</td> 
   <td><img alt="\sinh\!g" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzYvNi8yLzY2MmI0ZjkwODMyZGVhMDJkY2VlNTMyYzIyNmRmM2JmLnBuZw?x-oss-process=image/format,png"></td> 
   <td>\cosh h</td> 
   <td><img alt="\cosh\!h" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzAvYi85LzBiOTViMTBiZTM0ZTM2OGZlYTQ2OTdhMzMzZjE0YzVkLnBuZw?x-oss-process=image/format,png"></td> 
   <td>\tanh i</td> 
   <td><img alt="\tanh\!i" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2QvNy83L2Q3NzlhY2M0MWQ4ZDllMWI3MDg2NDQ4MDdkMmI2MWExLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td>\operatorname{sh}j</td> 
   <td><img alt="\operatorname{sh}j" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2QvOS9hL2Q5YTViOTg5NzRjNzM2MDExOWJmODY4ZmMxYzVjNTQ0LnBuZw?x-oss-process=image/format,png"></td> 
   <td>\operatorname{argsh}k</td> 
   <td><img alt="\operatorname{argsh}k" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2MvNC80L2M0NGMxMTdiNDNhNzhkYmE0M2NiZDBkNDdmOWFlOWU3LnBuZw?x-oss-process=image/format,png"></td> 
   <td>\operatorname{ch}h</td> 
   <td><img alt="\operatorname{ch}h" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzkvYi9lLzliZWNiMWJhYWYzYWM2MmMzNWU1ZWNkMzNjNjg5Y2VlLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td>\operatorname{argch}l</td> 
   <td><img alt="\operatorname{argch}l" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2UvMS8zL2UxMzM2MmZlY2IyYzljNTM1ZTYzNzBiZWQyMzU1ZjIwLnBuZw?x-oss-process=image/format,png"></td> 
   <td>\operatorname{th}i</td> 
   <td><img alt="\operatorname{th}i" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzgvMS80LzgxNDZiZDU5MjViOTMxZTdmZmU4NzhjODM3NjJhOTQ1LnBuZw?x-oss-process=image/format,png"></td> 
   <td>\operatorname{argth}m</td> 
   <td><img alt="\operatorname{argth}m" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzUvNS8zLzU1MzY0OTA4NTRiMGMyNTkyNjQ0YzQ0NDU1Y2ZkNDNhLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td>k'(x)=\lim_{\Delta x\to 0}\frac{k(x)-k(x-\Delta x)}{\Deltax}</td> 
   <td><img alt="k'(x)=\lim_{\Delta x\to0}\!\frac{k(x)-k(x-\Delta x)}{\Delta x}" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2EvMy81L2EzNWFmY2VjN2JlNmYyZTBlNDk5NjRmMzk5N2VlYWM2LnBuZw?x-oss-process=image/format,png"></td> 
   <td>\limsup S</td> 
   <td><img alt="\limsup S" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2MvMy9hL2MzYWM3MzU0NTE1MTFiZGY4ZGUxZDVkYTU4MjA2YThhLnBuZw?x-oss-process=image/format,png"></td> 
   <td>\liminf I</td> 
   <td><img alt="\liminf I" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2YvOC81L2Y4NTA4YjFhZmIyN2ZlMzBmZDViZTkxOTg0OTM4ZGY0LnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td>\max H</td> 
   <td><img alt="\max\!H" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzkvOS9jLzk5Y2VkOWQ0YjJjZWFhNzY2YzNjNWQ2OGJhYzg2OTc5LnBuZw?x-oss-process=image/format,png"></td> 
   <td>\min L</td> 
   <td><img alt="\min\!L" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzAvNy9kLzA3ZGRmZGQ5NTBlMzRkNDQ0MGI1YjY3Njc4YWQ4YmZhLnBuZw?x-oss-process=image/format,png"></td> 
   <td>\inf s</td> 
   <td><img alt="\inf s" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzcvNC84Lzc0ODdiYTM4ZDc2NjliZDc1ZDk4ZDY0MzUyZjBlMTgwLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td>\sup t</td> 
   <td><img alt="\sup t" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzYvNS8zLzY1Mzg1NGMxYWFkOGNmYTE2NWI1YThjMzliNWZiOTY5LnBuZw?x-oss-process=image/format,png"></td> 
   <td>\exp\!t</td> 
   <td><img alt="\exp\!t" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2MvOC9lL2M4ZTUyMjc4YThiYzhjNjA4YWZhMjg1ZjdjNGMyOGRmLnBuZw?x-oss-process=image/format,png"></td> 
   <td>\ln X</td> 
   <td><img alt="\ln\!X" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzkvZi82LzlmNjc4NGRkYjNmNGI5NTU1NjEyZjFkZTc0MDk4MTE2LnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td>\lg X</td> 
   <td><img alt="\lg\!X" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzMvMi82LzMyNjdhZGY3MDg2OTNjYTQzYjhmYzRkYWNlNTk3YmUwLnBuZw?x-oss-process=image/format,png"></td> 
   <td>\log X</td> 
   <td><img alt="\log\!X" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzEvNi9kLzE2ZDE0ZmZhY2M1ZmViMGI0ZjMwZGU0NmFlYTkzMWJmLnBuZw?x-oss-process=image/format,png"></td> 
   <td>\log_\alpha X</td> 
   <td><img alt="\log_\alpha\!X" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2IvYi82L2JiNmRiOTc5YjkxMzYzOGEwZDBmMzBhNGFjMzJiZDQyLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td>\ker x</td> 
   <td><img alt="\ker x" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2MvYS8wL2NhMDUxYzRlZGE0ZDU1Y2E5OWJkM2I5MThiZDdlYWQ1LnBuZw?x-oss-process=image/format,png"></td> 
   <td>\deg x</td> 
   <td><img alt="\deg\!x" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2YvYi81L2ZiNWQwYTNiMGYxZmVjOTYzOWMwNGU5MmIyNTJmZWUwLnBuZw?x-oss-process=image/format,png"></td> 
   <td>\gcd(T,U,V,W,X)</td> 
   <td><img alt="\!\gcd(T,U,V,W,X)" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2UvZC84L2VkODEwOTkyZTg4MDQxMmY1NDM4OWY1ODFiM2U0ZjNjLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td>\Pr x</td> 
   <td><img alt="\Pr x" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzEvZi8xLzFmMWM5NTMzYjY2YjNhZjFhMjU0MGJmYTQxY2E5ZGZmLnBuZw?x-oss-process=image/format,png"></td> 
   <td>\det x</td> 
   <td><img alt="\det\!x" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2YvMC8xL2YwMTFiN2RlMDE4MWUzMTNjNGUzNjI5MzQxOWJjNGRhLnBuZw?x-oss-process=image/format,png"></td> 
   <td>\hom x</td> 
   <td><img alt="\hom x" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzkvMS85LzkxOTYwM2QyMWE2NmQ2OTA5OTUzY2YwOTVkOGNlOGM3LnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td>\arg x</td> 
   <td><img alt="\arg x" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzQvMi84LzQyOGVmMmU0NGU2NGQ1ZGUzNzczZjU5MWRlM2Q1ZTA2LnBuZw?x-oss-process=image/format,png"></td> 
   <td>\dim x</td> 
   <td><img alt="\dim x" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2YvMS9iL2YxYjkyYzcxOTM0ZDJkNjYwZjY4Nzc3NzQwNTYwYWE5LnBuZw?x-oss-process=image/format,png"></td> 
   <td>\lim_{t\to n}T</td> 
   <td><img alt="\lim_{t\to n}T" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzcvYS9iLzdhYjNhODg5OTg5NzVmYzZjMDJmMzk1ZWI3YTY3N2NjLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
 </tbody> 
</table>

### 同余 ###

### 微分 ###

<table> 
 <tbody> 
  <tr> 
   <th>语法</th> 
   <th>效果</th> 
   <th>语法</th> 
   <th>效果</th> 
   <th>语法</th> 
   <th>效果</th> 
  </tr> 
  <tr> 
   <td>\nabla</td> 
   <td><img alt="\nabla" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2YvZS8zL2ZlM2E4M2U0MTA3NDgzNDczMTc0M2FiODAzY2Q0OTM2LnBuZw?x-oss-process=image/format,png"></td> 
   <td>\partial x</td> 
   <td><img alt="\partial x" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzIvOC9kLzI4ZGRiM2U4MjExNWQwNjk3OTZmYWY2MzU2ZTJkYmY2LnBuZw?x-oss-process=image/format,png"></td> 
   <td>\mathrm{d}x</td> 
   <td><img alt="\mathrm{d}x\" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzMvZC83LzNkNzUyNGQyYjIzNzJhMTE4OGQ3M2IyMGI5YmE0YjMxLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td>\dot x</td> 
   <td><img alt="\dot x" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzMvYS9iLzNhYmYyYWMyZmNjMTQzNjJiMzJiMDQxMWQ0M2NiZjQ4LnBuZw?x-oss-process=image/format,png"></td> 
   <td>\ddot y</td> 
   <td><img alt="\ddot y" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzAvZC8yLzBkMjNmM2E2MzkxYWU3OWZhYzNmNGIzMGVjOTE0YTg0LnBuZw?x-oss-process=image/format,png"></td> 
   <td>\tilde{A}_2</td> 
   <td> <p>&nbsp;<img alt="\tilde{A}_2" src="https://latex.codecogs.com/gif.latex?%5Ctilde%7BA%7D_2"></p> </td> 
  </tr> 
 </tbody> 
</table>

### 集合 ###

<table> 
 <tbody> 
  <tr> 
   <th>语法</th> 
   <th>效果</th> 
   <th>语法</th> 
   <th>效果</th> 
   <th>语法</th> 
   <th>效果</th> 
   <th>语法</th> 
   <th>效果</th> 
   <th>语法</th> 
   <th>效果</th> 
  </tr> 
  <tr> 
   <td>\forall</td> 
   <td><img alt="\forall" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2QvNC9kL2Q0ZDQ5YmVhZDEyNTI2MWIyMjZlYWE4NjdiZDAxNmNlLnBuZw?x-oss-process=image/format,png"></td> 
   <td>\exists</td> 
   <td><img alt="\exists" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzkvMy9lLzkzZWJlODYzNmUxZjhkNjAwMDRmZTMzZDEzMjE2NzRlLnBuZw?x-oss-process=image/format,png"></td> 
   <td>\empty</td> 
   <td><img alt="\empty" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzQvZC9mLzRkZjA4NWY3MGE5NzI0NGM5NzdiNmZmMjBiMTk1MmI0LnBuZw?x-oss-process=image/format,png"></td> 
   <td>\emptyset</td> 
   <td><img alt="\emptyset" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzQvZC9mLzRkZjA4NWY3MGE5NzI0NGM5NzdiNmZmMjBiMTk1MmI0LnBuZw?x-oss-process=image/format,png"></td> 
   <td>\varnothing</td> 
   <td><img alt="\varnothing" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2QvMC85L2QwOTZmYzE1ZDU3ODU0ZWM4OWQ3NDY3MDliMDJlNTJlLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td>\in</td> 
   <td><img alt="\in" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzgvYy8yLzhjMjBjNzhiMzY0ZWQ1ZGJhZGQ0OWU1Yjk5N2FhMWNjLnBuZw?x-oss-process=image/format,png"></td> 
   <td>\ni</td> 
   <td><img alt="\ni" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzcvYy8zLzdjMzRiZjhlN2I0MTk1MmQwMjRlZjIxODAzMzBiMzA4LnBuZw?x-oss-process=image/format,png"></td> 
   <td>\not\in</td> 
   <td><img alt="\not\in" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzUvMi81LzUyNWY2ODQwZDc4Y2RjNGJjYjE3N2YwNmM3OTY0MDIyLnBuZw?x-oss-process=image/format,png"></td> 
   <td>\notin</td> 
   <td><img alt="\notin" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzYvOS8yLzY5MjYxNGY3MmUyMzFkYjBkMjMxMzA1MGFjMjllMTEzLnBuZw?x-oss-process=image/format,png"></td> 
   <td>\subset</td> 
   <td><img alt="\subset" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzcvYS9mLzdhZmE4OGMyODc3ZDc5ZTZhOGExOTBiMzYwZWRmY2Q2LnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td>\subseteq</td> 
   <td><img alt="\subseteq" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2EvMC83L2EwNzkwM2EwNTA0ZjUwZjI3ZTJhODVjMjdlNDdmYmQ1LnBuZw?x-oss-process=image/format,png"></td> 
   <td>\supset</td> 
   <td><img alt="\supset" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzAvZi8yLzBmMmMwNGY4MmExZWI4ZTNlMzcxMzY2MjE0NTc5ZjViLnBuZw?x-oss-process=image/format,png"></td> 
   <td>\supseteq</td> 
   <td><img alt="\supseteq" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzUvNS9mLzU1ZmVmMzQ0MzZmOTAxYzNlNDg4Y2JhYTQxMDUwZGY4LnBuZw?x-oss-process=image/format,png"></td> 
   <td>\cap</td> 
   <td><img alt="\cap" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2UvNy84L2U3OGY2MzIwMzgzNTRhYWU1ODNmNzk1YTczZDRlNmI4LnBuZw?x-oss-process=image/format,png"></td> 
   <td>\bigcap</td> 
   <td><img alt="\bigcap" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2QvZC9mL2RkZjg2NDY0ZGNjMjE5MDI1OGM3NmRkYzFkYTcwMzJhLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td>\cup</td> 
   <td><img alt="\cup" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzQvMy8yLzQzMmMxZGY2OWUxMWFiYTdjNWM1MDcwZTc1Nzg2MDlmLnBuZw?x-oss-process=image/format,png"></td> 
   <td>\bigcup</td> 
   <td><img alt="\bigcup" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzgvZC81LzhkNTA1MjNmZDY0Y2ExMjlhZTA5YzdhZTczZTEzODVmLnBuZw?x-oss-process=image/format,png"></td> 
   <td>\biguplus</td> 
   <td><img alt="\biguplus" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzkvMC8yLzkwMmVmZmQ0ODQ0YWU3ZGJkNzFmOWYzY2VjZWMyNWYwLnBuZw?x-oss-process=image/format,png"></td> 
   <td>\sqsubset</td> 
   <td><img alt="\sqsubset" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2YvMi8yL2YyMjYxNGIyYzM5YmU2NzJiZmRhMTFhZmRkZDE1YzE4LnBuZw?x-oss-process=image/format,png"></td> 
   <td>\sqsubseteq</td> 
   <td><img alt="\sqsubseteq" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2IvMS9iL2IxYmU2YzI4ZDM4ZTE4MzkwZWE4MDhlNTZjNGUxZDkzLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td>\sqsupset</td> 
   <td><img alt="\sqsupset" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2YvZS80L2ZlNDc0MDFmMjc4ZmEwODkyNTU5YmFkNWI5MzczZWJlLnBuZw?x-oss-process=image/format,png"></td> 
   <td>\sqsupseteq</td> 
   <td><img alt="\sqsupseteq" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzAvOS9hLzA5YTg3YzE4YzQ1YzI2ZTI4NGU2MTYwYmMzNDRlYmU5LnBuZw?x-oss-process=image/format,png"></td> 
   <td>\sqcap</td> 
   <td><img alt="\sqcap" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzUvOS81LzU5NTUzMjYwYmVkNWUzOTlkYjY1MWNmMmEzZjcwM2NmLnBuZw?x-oss-process=image/format,png"></td> 
   <td>\sqcup</td> 
   <td><img alt="\sqcup" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzIvZC8xLzJkMTMwNjE4YzRkMjliMGYxZjUyZjI0OGZmMzU5MzQxLnBuZw?x-oss-process=image/format,png"></td> 
   <td>\bigsqcup</td> 
   <td><img alt="\bigsqcup" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2IvZi82L2JmNjA2MTU4NjBiMTJhZDhiMzFjYzI3NjQ1ZmM1MjI0LnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
 </tbody> 
</table>

### 逻辑 ###

<table> 
 <tbody> 
  <tr> 
   <th>语法</th> 
   <th>效果</th> 
   <th>语法</th> 
   <th>效果</th> 
   <th>语法</th> 
   <th>效果</th> 
   <th>语法</th> 
   <th>效果</th> 
  </tr> 
  <tr> 
   <td>p</td> 
   <td><img alt="p" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzgvMy84LzgzODc4YzkxMTcxMzM4OTAyZTBmZTBmYjk3YThjNDdhLnBuZw?x-oss-process=image/format,png"></td> 
   <td>\land</td> 
   <td><img alt="\land" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzkvYy9hLzljYWU0NDM3NzU2YTE1YjhlNDRlYzIzZTA3ZmIxZjY1LnBuZw?x-oss-process=image/format,png"></td> 
   <td>\wedge</td> 
   <td><img alt="\wedge" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzEvYi9hLzFiYTRmMDZmNjg2MTRlNWRhNzlhOGViZDM3OGQ1MzJhLnBuZw?x-oss-process=image/format,png"></td> 
   <td>\bigwedge</td> 
   <td><img alt="\bigwedge" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzYvYy8xLzZjMTM1N2YzNDRkNzliMTRiYmQ2YTQzYzExMmYzNmRiLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td>\bar{q} \to p</td> 
   <td><img alt="\pagecolor{White} \bar{q} \to p" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzYvYy9jLzZjYzhhODAzNjNkYzgwMzFjNTNhMGY0YWU0NzA0YzkxLnBuZw?x-oss-process=image/format,png"></td> 
   <td>\lor</td> 
   <td><img alt="\lor" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzUvYS9kLzVhZGRiMTM0Mzg1ZTQ3YTJlZmE0ODRmNjMwNmU3NWExLnBuZw?x-oss-process=image/format,png"></td> 
   <td>\vee</td> 
   <td><img alt="\vee" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzcvMi83LzcyN2VhNGM4YzQ5ODYyNDExZWRhZTQ2YWRmNTA2ZTNlLnBuZw?x-oss-process=image/format,png"></td> 
   <td>\bigvee</td> 
   <td><img alt="\bigvee" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2EvZi8yL2FmMmJlZWJjNjljNjRmNmE5YTU5ZGI2MTExM2UxNGEwLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td>\lnot</td> 
   <td><img alt="\lnot" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzgvZS9mLzhlZmNhOTYwYjIwOTQwMjEwNGI0NDhhNWFkOTQ4NmE4LnBuZw?x-oss-process=image/format,png"></td> 
   <td>\neg q</td> 
   <td><img alt="\pagecolor{White} \neg q" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2QvOC9hL2Q4YTQxZWRkYTA5NDc0NWVmNzg1MGZlOTdjZWFhNWNhLnBuZw?x-oss-process=image/format,png"></td> 
   <td>\setminus</td> 
   <td><img alt="\setminus" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzEvNy9kLzE3ZDIzM2U3ZjI1ZTdlNjEwOGU2ZTgxMzVmYzViZjY1LnBuZw?x-oss-process=image/format,png"></td> 
   <td>\smallsetminus</td> 
   <td><img alt="\pagecolor{White} \smallsetminus" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzcvMi85LzcyOTBmZjNmZTRmM2VmODkyN2NhZjU2ZGMzYzJkMTMxLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
 </tbody> 
</table>

### 根号 ###

### 关系符号 ###

<table> 
 <tbody> 
  <tr> 
   <th>语法</th> 
   <th>效果</th> 
  </tr> 
  <tr> 
   <td><code>\Delta ABC\sim\Delta XYZ</code></td> 
   <td><img alt="\Delta ABC\sim\Delta XYZ\!" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzYvYS8zLzZhM2U3N2NhZTc5ZjBmZGNjMTcyN2I1MDYxNDExMjIxLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td><code>\sqrt{3}\approx1.732050808\ldots</code></td> 
   <td><img alt="\sqrt{3}\approx1.732050808\ldots" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2QvYS83L2RhNzNhNDk5MjcxMTAyMzFmNjAyMWM2YWRiMDhhNDNkLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td>\simeq</td> 
   <td><img alt="\simeq" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzgvZS8zLzhlMzY0OGU4Mjg2YzQxNGExMWI4ZjEwYTgzM2Q1NTk2LnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td>\cong</td> 
   <td><img alt="\cong" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2YvMS82L2YxNmE3YmQ4MGJiNTY0OGE3NTVlYjU4MjIxZDAzNTQ2LnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td>\dot=</td> 
   <td><img alt="\dot=" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2UvMC8xL2UwMTFkYWMyMzA3Mjc5N2U4ZmM3M2NmNTc1NzA5NzgyLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td><code>\ggg</code></td> 
   <td><img alt="\ggg" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2YvYi83L2ZiN2QxY2Y5YTVlNjVmOTgwODliNmIyY2IxNTcwYTNjLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td><code>\gg</code></td> 
   <td><img alt="\gg" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzMvMy9lLzMzZTM1MDJkZmJkM2Y4NzVkY2JkZDJmOWE0MGVlZGI0LnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td><code>&gt;</code></td> 
   <td><img alt=">\," src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzEvMS80LzExNDUyOWFhODE1OTNlNGRmYjIyNzlhOWI1OTRjNzc5LnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td><code>\ge</code></td> 
   <td><img alt="\ge" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzgvZi9iLzhmYmUyYTUwNmZlM2RiMDgzNTU0OGUxYjY0OGVjOTc3LnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td><code>\geqq</code></td> 
   <td><img alt="\geqq" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzIvMy9lLzIzZTY4Yjk3ZThkZGY0NDNjZGVlZDVjZTQ1ZTA0YWJlLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td><code>=</code></td> 
   <td><img alt="=\," src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzQvNC84LzQ0ODhiYTVmN2U4MmUyZDhjMTM2YjU1OWQ5NTI4M2Q1LnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td><code>\leq</code></td> 
   <td><img alt="\leq" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzQvOS9kLzQ5ZGMxNDQzZjMzY2Y2MzA4MmQ2ZTE5M2RkMmFmNzhmLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td><code>\leqq</code></td> 
   <td><img alt="\leqq" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzgvOC81Lzg4NWY5ZGI3YzM4YzQ1NzU4YzBmN2IwN2I4MjNiYzY0LnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td><code>&lt;</code></td> 
   <td><img alt="<\," src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzAvMS82LzAxNjRjYzJjMzFjOTA2ZDlkNzc1MDM3NDEwY2MxOTVjLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td><code>\ll</code></td> 
   <td><img alt="\ll" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzkvNC8zLzk0MzkxNDZjYzgxZTc2M2UwNTYzY2NiYmNiNTIzMzE0LnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td><code>\lll</code></td> 
   <td><img alt="\lll" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzQvZS84LzRlOGRjNDNhMWY1YmU5ZWEzZDhkMjdmZGVhODgyNDk3LnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td><code>(x-y)^2\equiv(-x+y)^2\equiv x^2-2xy+y^2</code></td> 
   <td><img alt="(x-y)^2\equiv(-x+y)^2\equiv x^2-2xy+y^2" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzYvYy85LzZjOWEyYmZkMGQzYjlhNWE3NGY4NjgyNDc5NzMzY2Y5LnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td> <p><code>\begin{align}</code></p> <p><code>\because\begin{cases}</code></p> <p><code>\acute{a}x^2+bx^2+c\gtrless0\gtrless\grave{a}x^2+bx^2+c\\</code></p> <p><code>\acute{a}&gt;0&gt;\grave{a}</code></p> <p><code>\end{cases}\\</code></p> <p><code>\therefore\frac{-b\pm\sqrt{b^2-4\acute{a}c}}{2\acute{a}}{}_\lessgtr^\gtrlessx_\lessgtr^\gtrless\frac{-b\pm\sqrt{b^2-4\grave{a}c}}{2\grave{a}}</code></p> <p><code>\end{align}</code></p> </td> 
   <td><img alt="\begin{align} \because\begin{cases} \acute{a}x^2+bx^2+c\gtrless0\gtrless\grave{a}x^2+bx^2+c\ \acute{a}>0>\grave{a} \end{cases}\ \therefore\frac{-b\pm\sqrt{b^2-4\acute{a}c}}{2\acute{a}}{}_\lessgtr^\gtrless x_\lessgtr^\gtrless\frac{-b\pm\sqrt{b^2-4\grave{a}c}}{2\grave{a}} \end{align}" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzgvMS8wLzgxMDVhZWQyYTZhMDM3MmQzNDhhZjU3N2VhODY1MmQ4LnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td>x\not\equiv N</td> 
   <td><img alt="x\not\equiv N" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzEvYi8wLzFiMDViZWY2MzgxOTdiNTZlNzI5OGY3Y2UzMTZhZDEzLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td>x\ne A</td> 
   <td><img alt="x\ne A" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzMvMS8wLzMxMDRkZTRlOGVmMTg5YmUxMGQ0M2Q2Y2E4ZTk0NDRhLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td>x\neq C</td> 
   <td><img alt="x\neq C" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzcvMC8xLzcwMTZmNDZkYTgyZDg1NjZhNjVkOTNhMGVkMDgyODc0LnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td>t\propto v</td> 
   <td><img alt="t\propto v" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2MvZi9mL2NmZmYxOGRiZmViYzY0ZThkNjA4MGZhMzczMTI0OWMxLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td>\pm</td> 
   <td><img alt="\pm" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzUvNy8yLzU3MjJlMmY2MTY5MzA4YjhiZTM1NDI5MDBjNmQ2NTUzLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td>\mp</td> 
   <td><img alt="\mp" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzAvMi9mLzAyZjRkODM5Y2Y5NmI2MDEzMmZlYTUzNDgwZDYzNjQ4LnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
 </tbody> 
</table>

### 几何符号 ###

<table> 
 <tbody> 
  <tr> 
   <th colspan="2">特征</th> 
   <th>语法</th> 
   <th>效果</th> 
  </tr> 
  <tr> 
   <td colspan="2">菱形</td> 
   <td>\Diamond</td> 
   <td><img alt="\Diamond" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzYvYS8yLzZhMjA4NGRlNzg3ZmIyZDFjM2U0MDhkOTI2NDI1OTA0LnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td colspan="2">正方形</td> 
   <td>\Box</td> 
   <td><img alt="\Box" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzkvZC84LzlkOGY2ZDUzYWQwNzA3NzFhNjkxMDkzMzgxMDAyM2M0LnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td>三角形</td> 
   <td>Delta</td> 
   <td><code>\Delta</code></td> 
   <td><img alt="\Delta\!" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzUvYS9iLzVhYmM5YTk4M2NlY2RlMmY5MDJmZjVlNGRlMzRlYzFmLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td>图型</td> 
   <td><code>\triangle</code></td> 
   <td><img alt="\triangle" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2YvNS9kL2Y1ZDg4OWYzMmQ2Nzk0ZTFiYzJlZDM5NGU5Njg4Yzc2LnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td colspan="2">角名</td> 
   <td><code>\angle\Alpha\Beta\Gamma</code></td> 
   <td><img alt="\angle\Alpha\Beta\Gamma" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzMvOC81LzM4NTAxOTMwYWFkYjJmMmQ3MjRjMTkzZjIwOWY5NTc4LnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td colspan="2"><a href="http://zh.wikipedia.org/wiki/%E8%A7%92%E5%BA%A6" rel="nofollow">角度</a></td> 
   <td><code>\sin\!\frac{\pi}{3}=\sin60^\operatorname{\omicron}=\frac{\sqrt{3}}{2}</code></td> 
   <td><img alt="\sin\!\frac{\pi}{3}=\sin60^\operatorname{\omicron}=\frac{\sqrt{3}}{2}" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2QvYS8wL2RhMDgwNGU1YmUxODY5YzU4M2U3NjFiYjM4ZTJmMDA3LnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td colspan="2"><a href="http://zh.wikipedia.org/wiki/%E5%9E%82%E7%9B%B4" rel="nofollow">垂直</a></td> 
   <td>\perp</td> 
   <td><img alt="\perp" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2QvMi8xL2QyMWUzZDUzZjc4NzY5YmVlZThmZjdiNmM0YTlhOTJjLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
 </tbody> 
</table>

### 箭头符号 ###

<table> 
 <tbody> 
  <tr> 
   <th>语法</th> 
   <th>效果</th> 
   <th>语法</th> 
   <th>效果</th> 
   <th>语法</th> 
   <th>效果</th> 
  </tr> 
  <tr> 
   <td>\leftarrow</td> 
   <td><img alt="\leftarrow" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2EvNi80L2E2NDY1YzAyNDQ2MjFjNjNlN2UxZTk2ZWI1NWFhZDdhLnBuZw?x-oss-process=image/format,png"></td> 
   <td>\gets</td> 
   <td><img alt="\gets" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2MvZS85L2NlOWJmZDkyNTcwNjU2MDE5ZmVkNzlkMDkyYjZhZTc0LnBuZw?x-oss-process=image/format,png"></td> 
   <td>\rightarrow</td> 
   <td><img alt="\rightarrow" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzgvMy9lLzgzZTM3YjcyNDZmZGZjYjk5YjI3NTQyMTBlYmVhZTI3LnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td>\to</td> 
   <td><img alt="\to" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2QvYS81L2RhNTU4MTczZTFmMmRkZmViMjczNzUxZDQ4MWY5YTUyLnBuZw?x-oss-process=image/format,png"></td> 
   <td>\leftrightarrow</td> 
   <td><img alt="\leftrightarrow" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzEvYi8xLzFiMThhNGM0ZmM1NzhlZjRjZmQxY2MwZWIwZGFhNDczLnBuZw?x-oss-process=image/format,png"></td> 
   <td>\longleftarrow</td> 
   <td><img alt="\longleftarrow" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzUvNy9mLzU3ZjE4ZjYxMTVhYzU2MGNiODY5ZjU1ZDY5MWFiMzM0LnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td>\longrightarrow</td> 
   <td><img alt="\longrightarrow" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2IvNy84L2I3ODI4NmE0NzNkOTliYTk1OWNhZjQwNmNlYTdlNDkzLnBuZw?x-oss-process=image/format,png"></td> 
   <td>\mapsto</td> 
   <td><img alt="\mapsto" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzkvNC81Lzk0NTA2MTI1OThhYWZhMWY1NjE5Njg0MGQ3ZjgzZmY5LnBuZw?x-oss-process=image/format,png"></td> 
   <td>\longmapsto</td> 
   <td><img alt="\longmapsto" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2IvNi84L2I2OGM4N2RmMTAwZDZhNTlhZWE4ZTcxNmJiM2E5N2NlLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td>\hookrightarrow</td> 
   <td><img alt="\hookrightarrow" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzcvMi85LzcyOTRiYWZjZjBmYmYyNGZhMzA1YTAzZGRiN2JkMzY3LnBuZw?x-oss-process=image/format,png"></td> 
   <td>\hookleftarrow</td> 
   <td><img alt="\hookleftarrow" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2YvZC80L2ZkNDU4ZTEwZjhjZWJhNGUzNWQ4OWJhZmE4NjkwNWRlLnBuZw?x-oss-process=image/format,png"></td> 
   <td>\nearrow</td> 
   <td><img alt="\nearrow" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzMvMC9mLzMwZjE2OTZkYzk4YzQzMGU5M2E2MTM5YzQ1NmRiZDVkLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td>\searrow</td> 
   <td><img alt="\searrow" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzcvNS8yLzc1MjY5ZTdlNTcyYzljZDc4YWUxNTBkMzRhNzFiN2Q1LnBuZw?x-oss-process=image/format,png"></td> 
   <td>\swarrow</td> 
   <td><img alt="\swarrow" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzUvZi9iLzVmYjhkM2U2MjVmZmY4YzNiNGQ2NDUwMjM2YmFkOGViLnBuZw?x-oss-process=image/format,png"></td> 
   <td>\nwarrow</td> 
   <td><img alt="\nwarrow" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzIvMy9hLzIzYWM4MTJjYmQ3YzFkZTc3NjJiNTAxYjI1NzU3OThhLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td>\uparrow</td> 
   <td><img alt="\uparrow" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2YvMC80L2YwNDUwMjhiM2UzMTg0MWIyMmVmYmJiOWEwOTExZGMwLnBuZw?x-oss-process=image/format,png"></td> 
   <td>\downarrow</td> 
   <td><img alt="\downarrow" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzQvMi9mLzQyZjRhYzlhMjZmNzVlZGE2YTc3MTY5OTMwMjZhNmM4LnBuZw?x-oss-process=image/format,png"></td> 
   <td>\updownarrow</td> 
   <td><img alt="\updownarrow" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzQvNS83LzQ1N2NhN2Q5ZjA0MjVlOWIxZGM5OTEzMmUxMTlkYmNlLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
 </tbody> 
</table>

<table> 
 <tbody> 
  <tr> 
   <th>语法</th> 
   <th>效果</th> 
   <th>语法</th> 
   <th>效果</th> 
   <th>语法</th> 
   <th>效果</th> 
   <th>语法</th> 
   <th>效果</th> 
  </tr> 
  <tr> 
   <td>\rightharpoonup</td> 
   <td><img alt="\rightharpoonup" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzgvOC8zLzg4MzdkZjQ1ZTZjYzcwYjIwZjFjMjMyODQ3YTI3ZDcxLnBuZw?x-oss-process=image/format,png"></td> 
   <td>\rightharpoondown</td> 
   <td><img alt="\rightharpoondown" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2EvNy85L2E3OWQxODBmNzAwZGU4ZWZiZTljOWU0NGE1M2FkMzcyLnBuZw?x-oss-process=image/format,png"></td> 
   <td>\leftharpoonup</td> 
   <td><img alt="\leftharpoonup" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzQvOC85LzQ4OTgwMzlkN2IwNzAyYjI5MDc5ZTVlOWNhM2M0NTEzLnBuZw?x-oss-process=image/format,png"></td> 
   <td>\leftharpoondown</td> 
   <td><img alt="\leftharpoondown" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzkvYi8wLzliMDVhMjI2NjgyZWZjODZkYzFkNjZlZjAyNmFlMmUzLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td>\upharpoonleft</td> 
   <td><img alt="\upharpoonleft" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2MvNi9lL2M2ZTRkZTFjZWZhY2QzNzFlYmJmMDUwZjc4Nzg2YmU2LnBuZw?x-oss-process=image/format,png"></td> 
   <td>\upharpoonright</td> 
   <td><img alt="\upharpoonright" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2QvZi81L2RmNTgyNTVkODdhMTg5YjVjNDk2MTYwZjA2MjEyNzY1LnBuZw?x-oss-process=image/format,png"></td> 
   <td>\downharpoonleft</td> 
   <td><img alt="\downharpoonleft" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzQvYS80LzRhNDA2NzcxYWVmMzdkYjUzNTcyZTY3MmU5ZmNkMzYwLnBuZw?x-oss-process=image/format,png"></td> 
   <td>\downharpoonright</td> 
   <td><img alt="\downharpoonright" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzMvNy80LzM3NGQ3ZTAwNWVlMWE3NmM5OWFjNjhmNzEwMjhjYmRjLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
 </tbody> 
</table>

<table> 
 <tbody> 
  <tr> 
   <th>语法</th> 
   <th>效果</th> 
   <th>语法</th> 
   <th>效果</th> 
   <th>语法</th> 
   <th>效果</th> 
  </tr> 
  <tr> 
   <td>\Leftarrow</td> 
   <td><img alt="\Leftarrow" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzEvYy9mLzFjZmI2MWY4YjcyMDYyMjljM2FkNjQ1MmUwZDgzNjc0LnBuZw?x-oss-process=image/format,png"></td> 
   <td>\Rightarrow</td> 
   <td><img alt="\Rightarrow" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2QvZi8wL2RmMDlhZWE4ODQwMTljYjg4YTI5NTcxMjZmYWJhMzE2LnBuZw?x-oss-process=image/format,png"></td> 
   <td>\Leftrightarrow</td> 
   <td><img alt="\Leftrightarrow" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzAvMS80LzAxNGNjZWQyYjczYzIyZWI4OGNkYzY5MDFhZmIwYzlkLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td>\Longleftarrow</td> 
   <td><img alt="\Longleftarrow" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzcvMi8xLzcyMTgxMzhlYjljZmI3OTU5NzgyZDRlNTUzYTkxMDVlLnBuZw?x-oss-process=image/format,png"></td> 
   <td>\Longrightarrow</td> 
   <td><img alt="\Longrightarrow" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzcvNS84Lzc1ODU3NjUzNjA1MDYyMDZjYjg5M2UwM2I5NTE3YWNjLnBuZw?x-oss-process=image/format,png"></td> 
   <td>\Longleftrightarrow (or \iff)</td> 
   <td><img alt="\Longleftrightarrow" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzMvNS9jLzM1Yzg2MzI0Y2M0MjVkNTM5NjRiYmE0MWI0MGJiZTk5LnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td>\Uparrow</td> 
   <td><img alt="\Uparrow" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2IvMi82L2IyNjdiNjhiOWU2YjVjOTVkYzE4NTNjODJiZTMzYjAwLnBuZw?x-oss-process=image/format,png"></td> 
   <td>\Downarrow</td> 
   <td><img alt="\Downarrow" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2EvNS84L2E1ODU1MDQ4NDgzYzQwZThmZmVhYzA2NDY0NzZmMTc4LnBuZw?x-oss-process=image/format,png"></td> 
   <td>\Updownarrow</td> 
   <td><img alt="\Updownarrow" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzcvMS84LzcxODVjMTNkZDI4OWM4YmRlNWQ1NzVmODQ2ZTlkNTIxLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
 </tbody> 
</table>

### 特殊符号 ###

<table> 
 <tbody> 
  <tr> 
   <th>语法</th> 
   <th>效果</th> 
   <th>语法</th> 
   <th>效果</th> 
   <th>语法</th> 
   <th>效果</th> 
   <th>语法</th> 
   <th>效果</th> 
   <th>语法</th> 
   <th>效果</th> 
   <th>语法</th> 
   <th>效果</th> 
  </tr> 
  <tr> 
   <td>\eth</td> 
   <td><img alt="\eth" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzIvZC9hLzJkYWNlY2Q0ZmZmYjNkNGZkZWE1MmVkOTM3YjUwYzgxLnBuZw?x-oss-process=image/format,png"></td> 
   <td>\S</td> 
   <td><img alt="\S" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzUvZC82LzVkNjBkN2MwNWE4MDYyODEwNGVmMWJkMDcxOGViM2ZjLnBuZw?x-oss-process=image/format,png"></td> 
   <td>\P</td> 
   <td><img alt="\P" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzgvOS85Lzg5OWVkZDk3YWFiMjcyZDBhOGM4OTg3MzIxYjI0NDA4LnBuZw?x-oss-process=image/format,png"></td> 
   <td>\%</td> 
   <td><img alt="\%" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzIvOC9mLzI4ZjQyM2UyOGI1ZWIzOTcwMzRkNTFhYWY1OWI3MDhiLnBuZw?x-oss-process=image/format,png"></td> 
   <td>\dagger</td> 
   <td><img alt="\dagger" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzUvMC9mLzUwZjM5Y2I1MDZiODFjMDRmYjE4ODkzNDY5ZGU1YmU1LnBuZw?x-oss-process=image/format,png"></td> 
   <td>\ddagger</td> 
   <td><img alt="\ddagger" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2YvZC82L2ZkNmJiOWMyMzg2MGU3OGE4Mjc4MjhhODk2MDYzYjViLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td>\star</td> 
   <td><img alt="\star" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzIvMy9kLzIzZDY0ODg3ZjljMmFkZDdhMjk2ZTViOTlhY2JiZGZiLnBuZw?x-oss-process=image/format,png"></td> 
   <td>*</td> 
   <td><img alt="*" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzMvMy84LzMzODlkYWUzNjFhZjc5YjA0YzljOGU3MDU3ZjYwY2M2LnBuZw?x-oss-process=image/format,png"></td> 
   <td>\ldots</td> 
   <td><img alt="\ldots" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzAvNi81LzA2NTc3NTk5N2ZkYmNiODNkZGJlODkzNmU2N2U0ZjJjLnBuZw?x-oss-process=image/format,png"></td> 
   <td>\smile</td> 
   <td><img alt="\smile" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2UvYy85L2VjOTdmOGQwZGJmMmYyNmI4ODJiYjZkNjcxZDJlNTM1LnBuZw?x-oss-process=image/format,png"></td> 
   <td>\frown</td> 
   <td><img alt="\frown" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzQvZi84LzRmODg4MWNjZGEzMWE0Yjg0MjgzNTI5YjQ3ZDMwYzk1LnBuZw?x-oss-process=image/format,png"></td> 
   <td>\wr</td> 
   <td><img alt="\wr" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2IvNS9jL2I1Y2U5M2NiMjQ1NTVhNTM2NTY1ODFmZjg3YmMyY2FmLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
 </tbody> 
</table>

<table> 
 <tbody> 
  <tr> 
   <th>语法</th> 
   <th>效果</th> 
   <th>语法</th> 
   <th>效果</th> 
   <th>语法</th> 
   <th>效果</th> 
  </tr> 
  <tr> 
   <td>\oplus</td> 
   <td><img alt="\oplus" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2IvNy8xL2I3MWVkZDcwZmNhZDY3MGU5OWE5OTEyYmE1ZTU1ZDc3LnBuZw?x-oss-process=image/format,png"></td> 
   <td>\bigoplus</td> 
   <td><img alt="\bigoplus" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzEvNy9lLzE3ZTBiYWRlZWIyYTY1MDFkZjc3MjAzNTIxYTY1MDFkLnBuZw?x-oss-process=image/format,png"></td> 
   <td>\otimes</td> 
   <td><img alt="\otimes" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2UvOS9kL2U5ZGQ5MDEzZWMzMDBjZWJhNDE0ODRkZmMyYzlhODc2LnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td>\bigotimes</td> 
   <td><img alt="\bigotimes" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzkvZi8zLzlmM2NhYjQ5ZDY4NGU3NDk4YTk2NWIzZTlkM2MxNTI0LnBuZw?x-oss-process=image/format,png"></td> 
   <td>\times</td> 
   <td><img alt="\times" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzkvZS9lLzllZWRkNjFlMzJmN2E4ZTcwZTE3MTAyOGE3ZTVkYzA4LnBuZw?x-oss-process=image/format,png"></td> 
   <td>\cdot</td> 
   <td><img alt="\cdot" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzMvNi9mLzM2ZjhhZTRjODZiNjlkNTJkMDM3YTY4MDJkOTFjYzRhLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td>\div</td> 
   <td><img alt="\div" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2EvMy85L2EzOTMzZTRmZWU1MTRiMWRmYTRjZWEwOWFmNmFlNTNlLnBuZw?x-oss-process=image/format,png"></td> 
   <td>\circ</td> 
   <td><img alt="\circ" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzEvMC9jLzEwYzNlOTdkMmEzZWRhMGQxODJiODFkNDhmMjMxYjYyLnBuZw?x-oss-process=image/format,png"></td> 
   <td>\bullet</td> 
   <td><img alt="\bullet" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2IvZi81L2JmNTg4YzE3YTJmMWJhNjcwZGQ2N2FiZDhlZjZiOGM2LnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td>\bigodot</td> 
   <td><img alt="\bigodot" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzkvNi9hLzk2YTdiOWQwY2UzODdhZGZlN2M2ZjNiODczYTBiNzZhLnBuZw?x-oss-process=image/format,png"></td> 
   <td>\boxtimes</td> 
   <td><img alt="\boxtimes" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2UvMi8yL2UyMjExNDU2YmIzYWIzMzljNjZlMGFlMmUyYTgxM2E0LnBuZw?x-oss-process=image/format,png"></td> 
   <td>\boxplus</td> 
   <td><img alt="\boxplus" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2YvOC9lL2Y4ZTY0OGQ5NGE4ZTBjODY4MjdjMTYwNTMxMDI3NGMyLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
 </tbody> 
</table>

<table> 
 <tbody> 
  <tr> 
   <th>语法</th> 
   <th>效果</th> 
   <th>语法</th> 
   <th>效果</th> 
   <th>语法</th> 
   <th>效果</th> 
   <th>语法</th> 
   <th>效果</th> 
  </tr> 
  <tr> 
   <td>\triangleleft</td> 
   <td><img alt="\triangleleft" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzIvZC8wLzJkMDhjYjVjM2RiNGI5MjhlZTc4ZWJmNTc5OTI3MmMzLnBuZw?x-oss-process=image/format,png"></td> 
   <td>\triangleright</td> 
   <td><img alt="\triangleright" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzYvZi84LzZmOGUwNGQ2MDUyMWFlN2YxNmJhOTc3YWNjNzVhNWJlLnBuZw?x-oss-process=image/format,png"></td> 
   <td>\infty</td> 
   <td><img alt="\infty" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2QvMi80L2QyNDU3NzdhYmNhNjRlY2UyZDVkN2NhMGQxOWZkZGI2LnBuZw?x-oss-process=image/format,png"></td> 
   <td>\bot</td> 
   <td><img alt="\bot" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzIvNC82LzI0NjJlZjg4NjQyOGVlN2Q5NDk5MzZkNDEyODFmMDAzLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td>\top</td> 
   <td><img alt="\top" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzAvOS9jLzA5YzM1ZTQ4MGZmOTc4ZDU4NjhkNmUwOWYzMjRmOTEzLnBuZw?x-oss-process=image/format,png"></td> 
   <td>\vdash</td> 
   <td><img alt="\vdash" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2IvZi83L2JmNzNjOTM0MWE0OGM0N2M4NGE0OGRhZDYzNWZmOTQwLnBuZw?x-oss-process=image/format,png"></td> 
   <td>\vDash</td> 
   <td><img alt="\vDash" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2MvMS8xL2MxMWI3MmRjN2EzYjc4OWI3MTdhMjFmOTBiZTA2YzQ3LnBuZw?x-oss-process=image/format,png"></td> 
   <td>\Vdash</td> 
   <td><img alt="\Vdash" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2YvYS9iL2ZhYjUzZTdkYTU4ZTc1ZTllYjFjOGI1NzE5NjMxZTBiLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td>\models</td> 
   <td><img alt="\models" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2UvNy82L2U3NjZjZTBkZTRiYmU4OTlkN2VhMmViZTQwYjNlMGVlLnBuZw?x-oss-process=image/format,png"></td> 
   <td>\lVert</td> 
   <td><img alt="\lVert" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2QvOC82L2Q4NjRlNmM3Y2EzNTBlZDg2ZWU2NDI4OGFmYmQxNzhhLnBuZw?x-oss-process=image/format,png"></td> 
   <td>\rVert</td> 
   <td><img alt="\rVert" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2YvNy84L2Y3ODk4YjFhMGUzODA2NDFmNTNmYzRkNWMyMjE4YjY4LnBuZw?x-oss-process=image/format,png"></td> 
   <td></td> 
   <td></td> 
  </tr> 
 </tbody> 
</table>

<table> 
 <tbody> 
  <tr> 
   <th>语法</th> 
   <th>效果</th> 
   <th>语法</th> 
   <th>效果</th> 
   <th>语法</th> 
   <th>效果</th> 
  </tr> 
  <tr> 
   <td>\imath</td> 
   <td><img alt="\imath" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzEvYi82LzFiNmY3ZDUyOTIyMDEwMzg4MzVjZmNjZGYzNGM5NmUzLnBuZw?x-oss-process=image/format,png"></td> 
   <td>\hbar</td> 
   <td><img alt="\hbar" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzkvZC9mLzlkZmQwNTVlZjE2ODNiMDUzZjFiNWJmOWVkNmRiYmI0LnBuZw?x-oss-process=image/format,png"></td> 
   <td>\ell</td> 
   <td><img alt="\ell" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzMvMy80LzMzNGNlOWViNzlkZjExNzhiMDM4MDQ2MWM5ZWFhMDllLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td>\mho</td> 
   <td><img alt="\mho" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2YvZi9jL2ZmY2I3NmRhZmY3MGMyYmQ0ZTBmNDYyNGJlZDMyYTJmLnBuZw?x-oss-process=image/format,png"></td> 
   <td>\Finv</td> 
   <td><img alt="\Finv" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzYvYS85LzZhOTg0YzhjMjBlOTlkZjMwYzA2NTMyN2NmY2UyYjU1LnBuZw?x-oss-process=image/format,png"></td> 
   <td>\Re</td> 
   <td><img alt="\Re" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzYvZS8wLzZlMDM3MmVlM2U0MWY4ZWQ3YmJhNDI5ZTBjY2RjOTZlLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td>\Im</td> 
   <td><img alt="\Im" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2UvZi84L2VmODE4NTllOWZhNDU0OWVjZWZkNTE2NDdiZTgyMjRhLnBuZw?x-oss-process=image/format,png"></td> 
   <td>\wp</td> 
   <td><img alt="\wp" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzUvOS8yLzU5MjM0ZWVjN2I3NjI2MGJiYmZjZjgxOTc5ODg3YjJjLnBuZw?x-oss-process=image/format,png"></td> 
   <td>\complement</td> 
   <td><img alt="\complement" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzgvOS9mLzg5ZmIyOTFlNWU2NDMyMjk1MDI5NmU0NTM2OWQzMjg1LnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
 </tbody> 
</table>

<table> 
 <tbody> 
  <tr> 
   <th>语法</th> 
   <th>效果</th> 
   <th>语法</th> 
   <th>效果</th> 
   <th>语法</th> 
   <th>效果</th> 
   <th>语法</th> 
   <th>效果</th> 
  </tr> 
  <tr> 
   <td>\diamondsuit</td> 
   <td><img alt="\diamondsuit" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2YvYi8yL2ZiMjRlYzYwYWMxZDliNDM3YTY0YjJlZGNiNTQ1MGY0LnBuZw?x-oss-process=image/format,png"></td> 
   <td>\heartsuit</td> 
   <td><img alt="\heartsuit" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzcvYi9kLzdiZDZhNjE1OGM0NTg5MTE4MmVmNTc4MzIzNGMyYzVhLnBuZw?x-oss-process=image/format,png"></td> 
   <td>\clubsuit</td> 
   <td><img alt="\clubsuit" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2YvMi80L2YyNDNhNWZmMzJjZDFkZDRhMjg1MjFiMjI1YmI3NmI1LnBuZw?x-oss-process=image/format,png"></td> 
   <td>\spadesuit</td> 
   <td><img alt="\spadesuit" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzgvYS8yLzhhMmUzMDM1OWQxODIxYTMwYWZmNTk1ZTRmZjE4Mzc1LnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td>\Game</td> 
   <td><img alt="\Game" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzQvZi82LzRmNjdjNWMzZjhlMjYyNGIwZTYyZGUwZWU4ZDM4NjUwLnBuZw?x-oss-process=image/format,png"></td> 
   <td>\flat</td> 
   <td><img alt="\flat" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzgvMy84LzgzODBiMjY4NDgyYzFhOGQ5ZmQzNmRjODhlOGExMjdhLnBuZw?x-oss-process=image/format,png"></td> 
   <td>\natural</td> 
   <td><img alt="\natural" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzMvMS83LzMxNzg1MzdlM2YzYTJiYzUwNzgyMzI1OTIxODkwNGFkLnBuZw?x-oss-process=image/format,png"></td> 
   <td>\sharp</td> 
   <td><img alt="\sharp" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzcvOC8xLzc4MThiZjU3NDhlZDk3NTc5NTA3Y2QxNGExZDViYjY1LnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
 </tbody> 
</table>

## 上标、下标及[积分][Link 1]等 ##

<table> 
 <tbody> 
  <tr> 
   <th>功能</th> 
   <th>语法</th> 
   <th>效果</th> 
  </tr> 
  <tr> 
   <td>上标</td> 
   <td><code>a^2</code></td> 
   <td><img alt="\pagecolor{White} a^2" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2YvMS9kL2YxZDBhN2VlZWUyOTZmNDU3NjgxYjkwNmUyY2RhY2FjLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td>下标</td> 
   <td><code>a_2</code></td> 
   <td><img alt="\pagecolor{White} a_2" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzgvZS8yLzhlMmQyMjkxYTU1OTNhZjk0ZTk5NmE2NWI2ZjcyNmY4LnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td>组合</td> 
   <td><code>a^{2+2}</code></td> 
   <td><img alt="\pagecolor{White} a^{2+2}" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzAvNi84LzA2ODNiYmE4MTQ5NGZhNDE3MmYxMDUyY2VjOWYyZWVkLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td><code>a_{i,j}</code></td> 
   <td><img alt="\pagecolor{White} a_{i,j}" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2IvZC85L2JkOTNkNmE2OTc2NTY4Zjc2OGQ0ZWYyYTkxYmIyMTUxLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td>结合上下标</td> 
   <td><code>x_2^3</code></td> 
   <td><img alt="\pagecolor{White} x_2^3" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2YvNy9mL2Y3ZmZkODUzNTQzYjliMjQ2MWU3MmViMjhmOGRlYzNjLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td>前置上下标</td> 
   <td><code>{}_1^2\!X_3^4</code></td> 
   <td><img alt="\pagecolor{White} {}_1^2\!X_3^4" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzIvNC85LzI0OTFmODJiYjQ4YjU0OWEyYWFmMjg5ZGJiM2E3YmVkLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td><a href="http://zh.wikipedia.org/wiki/%E5%AF%BC%E6%95%B0" rel="nofollow">导数</a><br> （<strong>HTML</strong>）</td> 
   <td><code>x'</code></td> 
   <td><img alt="\pagecolor{White} x'" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzIvMS9lLzIxZWY5NjUxZjg4MTI0NmFjYzE4YThiOTIzNjhhYWJmLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td>导数<br> （<strong>PNG</strong>）</td> 
   <td><code>x^\prime</code></td> 
   <td><img alt="\pagecolor{White} x^\prime" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2UvMy9kL2UzZGJkZDQ2MmZkZTFmMWZiODkwYWVkNDhkZjY2NDQwLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td>导数<br> （<strong>错误</strong>）</td> 
   <td><code>x\prime</code></td> 
   <td><img alt="\pagecolor{White} x\prime" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2UvNS8yL2U1MjY5MTgxY2IzODUxZjU3ZjY4NGQ2MjFhOWYxZmNhLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td>导数点</td> 
   <td><code>\dot{x}</code></td> 
   <td><img alt="\pagecolor{White} \dot{x}" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzcvMy8zLzczM2IwZmYwNDRmMmUyY2ZkYjUyNDA3ODc0MDg3OGIxLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td><code>\ddot{y}</code></td> 
   <td><img alt="\pagecolor{White} \ddot{y}" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2UvNi9mL2U2ZjZiNDVlYzBlZTE1ZGI4YzRjYWEzZjFmZTg4ZmRmLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td><a href="http://zh.wikipedia.org/wiki/%E5%90%91%E9%87%8F" rel="nofollow">向量</a></td> 
   <td><code>\vec{c}</code></td> 
   <td><img alt="\pagecolor{White} \vec{c}" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzMvMS9mLzMxZmMxOTgxOTE5NmI5MTE1NmUxM2VkYzZjYjMzNThjLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td><code>\overleftarrow{a b}</code></td> 
   <td><img alt="\pagecolor{White} \overleftarrow{a b}" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2QvOS80L2Q5NDg3MzhiYmZlYjEyN2IxMzRmNTQ5MzIxYzc4OWZmLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td><code>\overrightarrow{c d}</code></td> 
   <td><img alt="\pagecolor{White} \overrightarrow{c d}" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzMvYy8xLzNjMTE1ZjMyZjc0NmUyYzczZDU5ZjFhOGNmYmUzNmEyLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td><code>\widehat{e f g}</code></td> 
   <td><img alt="\pagecolor{White} \widehat{e f g}" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzQvYy9iLzRjYmExZTc5ZGVhYzIzYmI1MDBhOGFhMjAzZDlhMTExLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td>上弧<br> (注: 正确应该用 \overarc, 但在这里行不通。要用建议的语法作为解决办法)</td> 
   <td><code>\overset{\frown} {AB}</code></td> 
   <td><img alt="\pagecolor{White} \overset{\frown} {AB}" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2IvNC8wL2I0MDQ1NmMyMWU5MzEyNzBhODAzYzFkNTM4ZDg2M2YyLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td>上划线</td> 
   <td><code>\overline{h i j}</code></td> 
   <td><img alt="\pagecolor{White} \overline{h i j}" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzUvYi8xLzViMTQzMzM5YmVhMmFiNWJlY2JiYjdhM2JkYWJhNTU1LnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td>下划线</td> 
   <td><code>\underline{k l m}</code></td> 
   <td><img alt="\pagecolor{White} \underline{k l m}" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzEvNC83LzE0Nzk0M2ZlOWU3YTIyMmI4NTAxMzJkZGQ3ODgyZGNlLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td>上括号</td> 
   <td><code>\overbrace{1+2+\cdots+100}</code></td> 
   <td><img alt="\pagecolor{White} \overbrace{1+2+\cdots+100}" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2UvOS85L2U5OTdkZjkyZmNkMzY3OWMxOTM1Y2Q3M2Y1ZmExYTczLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td><code>\begin{matrix} 5050 \\ \overbrace{ 1+2+\cdots+100 }\end{matrix}</code></td> 
   <td><img alt="\pagecolor{White} \begin{matrix} 5050 \\ \overbrace{ 1+2+\cdots+100 } \end{matrix}" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzcvMy9jLzczYzBlNGI0OTczMGQxMDZiNzUyYTdjMzcxNWIwYzNkLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td>下括号</td> 
   <td><code>\underbrace{a+b+\cdots+z}</code></td> 
   <td><img alt="\pagecolor{White} \underbrace{a+b+\cdots+z}" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2QvNy85L2Q3OTNkYTI4MjBhN2RlOWIwYzY0NWFjNzQ2ZGE3OWVmLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td><code>\begin{matrix} \underbrace{ a+b+\cdots+z } \\ 26\end{matrix}</code></td> 
   <td><img alt="\pagecolor{White} \begin{matrix} \underbrace{ a+b+\cdots+z } \\ 26 \end{matrix}" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2IvYy85L2JjOWRkNjlmZmZkNzAyZjQ4NDZmNzM1Nzk2MjBjODExLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td>求和</td> 
   <td><code>\sum_{k=1}^N k^2</code></td> 
   <td><img alt="\pagecolor{White} \sum_{k=1}^N k^2" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzYvYS80LzZhNDc5MTY1MGI3Nzg2MmE2ZDZiZjgzZjI4NmQ5ZjBjLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td><code>\begin{matrix} \sum_{k=1}^N k^2 \end{matrix}</code></td> 
   <td><img alt="\pagecolor{White} \begin{matrix} \sum_{k=1}^N k^2 \end{matrix}" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzMvOS9jLzM5Y2Y1ZWI3MGUwM2RmZjZlZDg3MzgyYmFlY2E5MjkxLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td>求积</td> 
   <td><code>\prod_{i=1}^N x_i</code></td> 
   <td><img alt="\pagecolor{White} \prod_{i=1}^N x_i" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzAvOS9mLzA5ZjNkMGYyNzdlN2QwZGE1MDRjYTMxZTVmNTQ2OTg4LnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td><code>\begin{matrix} \prod_{i=1}^N x_i \end{matrix}</code></td> 
   <td><img alt="\pagecolor{White} \begin{matrix} \prod_{i=1}^N x_i \end{matrix}" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzUvZi8wLzVmMDZiOWFhN2I0ZWJhNjBmM2U4ODZiY2FkZGUyOGYwLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td>上积</td> 
   <td><code>\coprod_{i=1}^N x_i</code></td> 
   <td><img alt="\pagecolor{White} \coprod_{i=1}^N x_i" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzYvNC9jLzY0Yzg0ZmVlZjU3NmFmZmNkNGE3YmRlYjc4NWE5NDNjLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td><code>\begin{matrix} \coprod_{i=1}^N x_i\end{matrix}</code></td> 
   <td><img alt="\pagecolor{White} \begin{matrix} \coprod_{i=1}^N x_i \end{matrix}" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2UvNS82L2U1NmRiODNlYTViYTcyNTM3YzJkODVlZDhmMDEzMjc2LnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td><a href="http://zh.wikipedia.org/wiki/%E6%9E%81%E9%99%90" rel="nofollow">极限</a></td> 
   <td><code>\lim_{n \to \infty}x_n</code></td> 
   <td><img alt="\pagecolor{White} \lim_{n \to \infty}x_n" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzcvOS81Lzc5NTBjNzlmMjE3YzBhODk2MDc2NTZlNThkNDI5NmZkLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td><code>\begin{matrix} \lim_{n \to \infty}x_n\end{matrix}</code></td> 
   <td><img alt="\pagecolor{White} \begin{matrix} \lim_{n \to \infty}x_n \end{matrix}" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2UvNy9jL2U3Y2NmZWYzMDM2MTU4MTBjMDYyMTNiZThhNjc2NDg0LnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td><a href="http://zh.wikipedia.org/wiki/%E7%A7%AF%E5%88%86" rel="nofollow">积分</a></td> 
   <td><code>\int_{-N}^{N} e^x\, dx</code></td> 
   <td><img alt="\pagecolor{White} \int_{-N}^{N} e^x\, dx" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzcvNC85Lzc0OTFlOTAxYTM2Y2ViMTNiYmJlOTQzNzU5YjE0ZGM4LnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td><code>\begin{matrix} \int_{-N}^{N} e^x\, dx\end{matrix}</code></td> 
   <td><img alt="\pagecolor{White} \begin{matrix} \int_{-N}^{N} e^x\, dx \end{matrix}" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzUvZi82LzVmNjUzMWFjYmQwNTk2MTlhZjA5ZDNiNTIwMzllZGU1LnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td><a href="http://zh.wikipedia.org/wiki/%E5%8F%8C%E9%87%8D%E7%A7%AF%E5%88%86" rel="nofollow">双重积分</a></td> 
   <td><code>\iint_{D}^{W} \, dx\,dy</code></td> 
   <td><img alt="\pagecolor{White} \iint_{D}^{W} \, dx\,dy" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzQvNC9lLzQ0ZTNmOTlmMWYyOWI5ZWU1ZGU4NzFlODIwY2VjNWYzLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td>三重积分</td> 
   <td><code>\iiint_{E}^{V} \, dx\,dy\,dz</code></td> 
   <td><img alt="\pagecolor{White} \iiint_{E}^{V} \, dx\,dy\,dz" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzgvYy8wLzhjMDUwYzViZDE2OTBkZDQyYTlmMTc1ZWMxMjRjYjk3LnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td>四重积分</td> 
   <td><code>\iiiint_{F}^{U} \, dx\,dy\,dz\,dt</code></td> 
   <td><img alt="\pagecolor{White} \iiiint_{F}^{U} \, dx\,dy\,dz\,dt" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2QvYi81L2RiNTFjNzFmNzlkMzAxYTY4OWIzMjMxOTI3YTBkZmFhLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td>闭合的<a href="http://zh.wikipedia.org/wiki/%E8%B7%AF%E5%BE%84%E7%A7%AF%E5%88%86" rel="nofollow">曲线</a>、<a href="http://zh.wikipedia.org/wiki/%E6%9B%B2%E9%9D%A2%E7%A7%AF%E5%88%86" rel="nofollow">曲面积分</a></td> 
   <td>\oint_{C} x^3\, dx + 4y^2\, dy</td> 
   <td><img alt="\pagecolor{White} \oint_{C} x^3\, dx + 4y^2\, dy" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2UvNS83L2U1NzkxYTE4NDM1OWFiMTlmZjdlMzcyYjE1ZWMwZDFiLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td><a href="http://zh.wikipedia.org/wiki/%E4%BA%A4%E9%9B%86" rel="nofollow">交集</a></td> 
   <td><code>\bigcap_1^{n} p</code></td> 
   <td><img alt="\pagecolor{White} \bigcap_1^{n} p" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzQvNi8zLzQ2M2Q0ZTRiZDMxNWMwYzYwMzAzNTRhNTQwZDg1ODI5LnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td><a href="http://zh.wikipedia.org/wiki/%E5%B9%B6%E9%9B%86" rel="nofollow">并集</a></td> 
   <td><code>\bigcup_1^{k} p</code></td> 
   <td><img alt="\pagecolor{White} \bigcup_1^{k} p" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzgvMC8wLzgwMDU5ZjQ1NGY4N2FmMTM4MDNiMzI3YzIwMmRjZWMxLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
 </tbody> 
</table>

## [分数][Link 2]、[矩阵][Link 3]和多行列式 ##

<table> 
 <tbody> 
  <tr> 
   <th>功能</th> 
   <th>语法</th> 
   <th>效果</th> 
  </tr> 
  <tr> 
   <td>分数</td> 
   <td><code>\frac{2}{4}=0.5</code></td> 
   <td><img alt="\frac{2}{4}=0.5" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzQvNi9kLzQ2ZGMwYjM0ZTBhYjRlOTQ0YTQzNzcyMGE0NDMxZDZjLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td>小型分数</td> 
   <td><code>\tfrac{2}{4} = 0.5</code></td> 
   <td><img alt="\tfrac{2}{4} = 0.5" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzIvOC80LzI4NDY2N2ZjNGE5Mjc5MDA5M2FhNTliNjFiMzY2N2EwLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td>大型分数（嵌套）</td> 
   <td><code>\cfrac{2}{c + \cfrac{2}{d + \cfrac{2}{4}}} =a</code></td> 
   <td><img alt="\cfrac{2}{c + \cfrac{2}{d + \cfrac{2}{4}}} = a" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzYvZC8wLzZkMDk5YzAyYjNmYWY3M2Y5MzIwNjU2MjE3NDE1OTA2LnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td>大型分数（不嵌套）</td> 
   <td><code>\dfrac{2}{4} = 0.5 \qquad \dfrac{2}{c + \dfrac{2}{d +\dfrac{2}{4}}} = a</code></td> 
   <td><img alt="\dfrac{2}{4} = 0.5 \qquad \dfrac{2}{c + \dfrac{2}{d + \dfrac{2}{4}}} = a" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzUvYS8zLzVhMzdhZTk0YTk1YzdkZDYwM2MyMGNkNGZiZThkOWU5LnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td><a href="http://zh.wikipedia.org/wiki/%E4%BA%8C%E9%A1%B9%E5%BC%8F" rel="nofollow">二项式</a>系数</td> 
   <td><code>\dbinom{n}{r}=\binom{n}{n-r}=C^n_r=C^n_{n-r}</code></td> 
   <td><img alt="\dbinom{n}{r}=\binom{n}{n-r}=C^n_r=C^n_{n-r}" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzYvYS81LzZhNTM3M2NkOGM2NTAzNTY3YTNjMmE2OWRlZGE3MWYzLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td>小型<a href="http://zh.wikipedia.org/wiki/%E4%BA%8C%E9%A1%B9%E5%BC%8F" rel="nofollow">二项式</a>系数</td> 
   <td><code>\tbinom{n}{r}=\tbinom{n}{n-r}=C^n_r=C^n_{n-r}</code></td> 
   <td><img alt="\tbinom{n}{r}=\tbinom{n}{n-r}=C^n_r=C^n_{n-r}" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzAvYi8xLzBiMTE4OGFmOWVlMWExMmJjNjJjYTU2Y2Y4M2YyNjhjLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td>大型<a href="http://zh.wikipedia.org/wiki/%E4%BA%8C%E9%A1%B9%E5%BC%8F" rel="nofollow">二项式</a>系数</td> 
   <td><code>\binom{n}{r}=\dbinom{n}{n-r}=C^n_r=C^n_{n-r}</code></td> 
   <td><img alt="\binom{n}{r}=\dbinom{n}{n-r}=C^n_r=C^n_{n-r}" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2IvNi85L2I2OWIyMWUzYjA0N2E5MWNkMTEyN2E0OThiMzI2N2Y2LnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td>矩阵</td> 
   <td> <pre><code>\begin{matrix}
x &amp; y \\
z &amp; v
\end{matrix}
</code></pre> </td> 
   <td><img alt="\begin{matrix} x &amp; y \\ z &amp; v \end{matrix}" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2IvOS85L2I5OTg5MDk2NmUxYjk5NzQ5NzIxMTQyOGY4ZTM0MTlkLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td> <pre><code>\begin{vmatrix}
x &amp; y \\
z &amp; v
\end{vmatrix}
</code></pre> </td> 
   <td><img alt="\begin{vmatrix} x &amp; y \\ z &amp; v \end{vmatrix}" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzkvMi9iLzkyYjhmMGU1Nzg0OGE4MGI0YmFiZDJiYTkzNzc1MzcwLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td> <pre><code>\begin{Vmatrix}
x &amp; y \\
z &amp; v
\end{Vmatrix}
</code></pre> </td> 
   <td><img alt="\begin{Vmatrix} x &amp; y \\ z &amp; v \end{Vmatrix}" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2IvYi9hL2JiYTViZmQxMTA1N2RiYjIwMjMwNzU4NGVlZDhmMmRjLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td> <pre><code>\begin{bmatrix}
0      &amp; \cdots &amp; 0      \\
\vdots &amp; \ddots &amp; \vdots \\
0      &amp; \cdots &amp; 0
\end{bmatrix}
</code></pre> </td> 
   <td><img alt="\begin{bmatrix} 0 &amp; \cdots &amp; 0 \\ \vdots &amp; \ddots &amp; \vdots \\ 0 &amp; \cdots &amp; 0\end{bmatrix}" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzgvMS9hLzgxYTEyYTA5YWM4NDg1M2UzZDI1MzIzYjg2NDNjNjMwLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td> <pre><code>\begin{Bmatrix}
x &amp; y \\
z &amp; v
\end{Bmatrix}
</code></pre> </td> 
   <td><img alt="\begin{Bmatrix} x &amp; y \\ z &amp; v \end{Bmatrix}" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2IvZi83L2JmNzI0NGUyODQyYzhhN2Q1NTg5MmUyMjk1NjBkNWMxLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td> <pre><code>\begin{pmatrix}
x &amp; y \\
z &amp; v
\end{pmatrix}
</code></pre> </td> 
   <td><img alt="\begin{pmatrix} x &amp; y \\ z &amp; v \end{pmatrix}" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzQvNC80LzQ0NGRmODhlNjE2ZGVmNGUyNzViNGU5MjBjN2I4NzJlLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td> <pre><code>\bigl( \begin{smallmatrix}
a&amp;b\\ c&amp;d
\end{smallmatrix} \bigr)
</code></pre> </td> 
   <td><img alt="\bigl( \begin{smallmatrix} a&amp;b\\ c&amp;d \end{smallmatrix} \bigr)" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2MvZC80L2NkNDliYmMxODhkY2UwZjkzZmVmNTczMTJhZjVhMTA2LnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td>条件定义</td> 
   <td> <pre><code>f(n) =
\begin{cases} 
n/2,  &amp; \mbox{if }n\mbox{ is even} \\
3n+1, &amp; \mbox{if }n\mbox{ is odd}
\end{cases}
</code></pre> </td> 
   <td><img alt="f(n) = \begin{cases} n/2, &amp; \mbox{if }n\mbox{ is even} \ 3n+1, &amp; \mbox{if }n\mbox{ is odd} \end{cases}" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2UvMy9hL2UzYWViZTUwMzY0Y2ZlNDk4ZmE5Y2E5OWMwMDM2MDEwLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td>多行等式</td> 
   <td> <pre><code>\begin{align}
f(x) &amp; = (m+n)^2 \\
&amp; = m^2+2mn+n^2 \\
\end{align}
</code></pre> </td> 
   <td><img alt="\begin{align} f(x) &amp; = (m+n)^2 \ &amp; = m^2+2mn+n^2 \ \end{align}" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzEvZC85LzFkOWY1NzYzNjBlOTQ5ZDA4ZTBmYWM3Y2FjYmJkMjVjLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td> <pre><code>\begin{alignat}{2}
f(x) &amp; = (m-n)^2 \\
f(x) &amp; = (-m+n)^2 \\
&amp; = m^2-2mn+n^2 \\
\end{alignat}
</code></pre> </td> 
   <td><img alt="\begin{alignat}{2} f(x) &amp; = (m-n)^2 \ f(x) &amp; = (-m+n)^2 \ &amp; = m^2-2mn+n^2 \ \end{alignat}" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzEvOC9kLzE4ZDRiYWQwODY1YjU3ZmMxZDViMzgzYWJlMmRhMWIwLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td>多行等式（左对齐）</td> 
   <td> <pre><code>\begin{array}{lcl}
z        &amp; = &amp; a \\
f(x,y,z) &amp; = &amp; x + y + z 
\end{array}
</code></pre> </td> 
   <td><img alt="\begin{array}{lcl} z &amp; = &amp; a \ f(x,y,z) &amp; = &amp; x + y + z \end{array}" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzkvYi9mLzliZjE5MTE1YmIyNzIzN2ZhOTk3Y2E5M2I5NGFkMjE3LnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td>多行等式（右对齐）</td> 
   <td> <pre><code>\begin{array}{lcr}
z        &amp; = &amp; a \\
f(x,y,z) &amp; = &amp; x + y + z    
\end{array}
</code></pre> </td> 
   <td><img alt="\begin{array}{lcr} z &amp; = &amp; a \ f(x,y,z) &amp; = &amp; x + y + z \end{array}" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzAvMi9hLzAyYWUzMjczNWUxZTIxYmEzYjA1OTg0Mjg5ZmQyNzYzLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td>长公式换行</td> 
   <td> <pre><code>&lt;math&gt;f(x) \,\!&lt;/math&gt;
&lt;math&gt;= \sum_{n=0}^\infty a_n x^n &lt;/math&gt;
&lt;math&gt;= a_0+a_1x+a_2x^2+\cdots&lt;/math&gt;

</code></pre> </td> 
   <td> <p><img alt="f(x) \,\!" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzgvZC9mLzhkZmFlMjAwMDBhMDQyZDhlOTA0N2FhZDFkN2UxNzFlLnBuZw?x-oss-process=image/format,png"><img alt="= \sum_{n=0}^\infty a_n x^n" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzYvNi8zLzY2MzNkNTFkNjNiMzUyODFkMDMwNzU1YTZiMGFlYmIxLnBuZw?x-oss-process=image/format,png"><img alt="= a_0 +a_1x+a_2x^2+\cdots" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2YvZS8zL2ZlM2UyNjgzODJmZDQ4NmU4NTcyZGFmODk1YmQ0YzlkLnBuZw?x-oss-process=image/format,png"></p> </td> 
  </tr> 
  <tr> 
   <td><a href="http://zh.wikipedia.org/wiki/%E6%96%B9%E7%A8%8B%E7%BB%84" rel="nofollow">方程组</a></td> 
   <td> <pre><code>\begin{cases}
3x + 5y +  z \\
7x - 2y + 4z \\
-6x + 3y + 2z
\end{cases}
</code></pre> </td> 
   <td><img alt="\begin{cases} 3x + 5y + z \\ 7x - 2y + 4z \\ -6x + 3y + 2z \end{cases}" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzYvMy80LzYzNDliZTA0YjM1NjJmYzIxNWM3YTRlMTMwNDIyYTk2LnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td>数组</td> 
   <td> <pre><code>\begin{array}{|c|c||c|} a &amp; b &amp; S \\
\hline
0&amp;0&amp;1\\
0&amp;1&amp;1\\
1&amp;0&amp;1\\
1&amp;1&amp;0\\
\end{array}
</code></pre> </td> 
   <td><img alt="\begin{array}{|c|c||c|} a &amp; b &amp; S \ \hline 0&amp;0&amp;1\ 0&amp;1&amp;1\ 1&amp;0&amp;1\ 1&amp;1&amp;0\ \end{array}" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzkvMS81LzkxNTFlOTRlZjJiYjUyYzE4MTc2ZGJlNGMxMTkyMWVkLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
 </tbody> 
</table>

## 字体 ##

### [希腊字母][Link 4] ###

斜体小写希腊字母一般用于在方程中显示变量。

<table> 
 <tbody> 
  <tr> 
   <th colspan="4"> <p>正体希腊字母</p> </th> 
  </tr> 
  <tr> 
   <th>特征</th> 
   <th>语法</th> 
   <th>效果</th> 
   <th>注释/外部链接</th> 
  </tr> 
  <tr> 
   <th> <p>大写字母</p> </th> 
   <td><code>\Alpha \Beta \Gamma \Delta \Epsilon \Zeta \Eta\Theta</code></td> 
   <td><img alt="\Alpha\Beta\Gamma\Delta\Epsilon\Zeta\Eta\Theta\!" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2EvNy9hL2E3YThlNmJiZGUyNGU5OWY5ZGFiMDBjODQwZjk0ODNkLnBuZw?x-oss-process=image/format,png"></td> 
   <th> <p><a href="http://zh.wikipedia.org/wiki/%CE%91" rel="nofollow">Α</a><a href="http://zh.wikipedia.org/wiki/%CE%92" rel="nofollow">Β</a>&nbsp;<a href="http://zh.wikipedia.org/wiki/%CE%93" rel="nofollow">Γ</a>&nbsp;<a href="http://zh.wikipedia.org/wiki/%CE%94" rel="nofollow">Δ</a><a href="http://zh.wikipedia.org/wiki/%CE%95" rel="nofollow">Ε</a>&nbsp;<a href="http://zh.wikipedia.org/wiki/%CE%96" rel="nofollow">Ζ</a>&nbsp;<a href="http://zh.wikipedia.org/wiki/%CE%97" rel="nofollow">Η</a><a href="http://zh.wikipedia.org/wiki/%CE%98" rel="nofollow">Θ</a></p> </th> 
  </tr> 
  <tr> 
   <td><code>\Iota \Kappa \Lambda \Mu \Nu \Xi \Omicron \Pi</code></td> 
   <td><img alt="\Iota\Kappa\Lambda\Mu\Nu\Xi\Omicron\Pi\!" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzAvZS8wLzBlMDIyMjQ1YWFjNjVkM2ZlNWVhZjE0MDY1NzYxMDY2LnBuZw?x-oss-process=image/format,png"></td> 
   <th> <p><a href="http://zh.wikipedia.org/wiki/%CE%99" rel="nofollow">Ι</a><a href="http://zh.wikipedia.org/wiki/%CE%9A" rel="nofollow">Κ</a>&nbsp;<a href="http://zh.wikipedia.org/wiki/%CE%9B" rel="nofollow">Λ</a>&nbsp;<a href="http://zh.wikipedia.org/wiki/%CE%9C" rel="nofollow">Μ</a><a href="http://zh.wikipedia.org/wiki/%CE%9D" rel="nofollow">Ν</a>&nbsp;<a href="http://zh.wikipedia.org/wiki/%CE%9E" rel="nofollow">Ξ</a>&nbsp;<a href="http://zh.wikipedia.org/wiki/%CE%9F" rel="nofollow">Ο</a><a href="http://zh.wikipedia.org/wiki/%CE%A0" rel="nofollow">Π</a></p> </th> 
  </tr> 
  <tr> 
   <td><code>\Rho \Sigma \Tau \Upsilon \Phi \Chi \Psi\Omega</code></td> 
   <td><img alt="\Rho\Sigma\Tau\Upsilon\Phi\Chi\Psi\Omega\!" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2UvZi9jL2VmYzMyNDRmZjQ4NjQ0YjYxMzRlZTQ1NTYzYjQ5YjQ1LnBuZw?x-oss-process=image/format,png"></td> 
   <th> <p><a href="http://zh.wikipedia.org/wiki/%CE%A1" rel="nofollow">Ρ</a><a href="http://zh.wikipedia.org/wiki/%CE%A3" rel="nofollow">Σ</a>&nbsp;<a href="http://zh.wikipedia.org/wiki/%CE%A4" rel="nofollow">Τ</a>&nbsp;<a href="http://zh.wikipedia.org/wiki/%CE%A5" rel="nofollow">Υ</a><a href="http://zh.wikipedia.org/wiki/%CE%A6" rel="nofollow">Φ</a>&nbsp;<a href="http://zh.wikipedia.org/wiki/%CE%A7" rel="nofollow">Χ</a>&nbsp;<a href="http://zh.wikipedia.org/wiki/%CE%A8" rel="nofollow">Ψ</a><a href="http://zh.wikipedia.org/wiki/%CE%A9" rel="nofollow">Ω</a></p> </th> 
  </tr> 
  <tr> 
   <th> <p>小写字母</p> </th> 
   <td><code>\alpha \beta \gamma \delta \epsilon \zeta \eta\theta</code></td> 
   <td><img alt="\alpha\beta\gamma\delta\epsilon\zeta\eta\theta\!" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzkvZi9lLzlmZWY5NDk4OWYwYWVmZWQ0Yzk1MzgyM2JkOTQ1ZTg5LnBuZw?x-oss-process=image/format,png"></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td><code>\iota \kappa\varkappa \lambda \mu \nu \xi \omicron\pi</code></td> 
   <td><img alt="\iota\kappa\varkappa\lambda\mu\nu\xi\omicron\pi\!" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzIvMS9mLzIxZmVmODQ4ZWZiNTlkNWJmNjE2OGJmYjlhODc1NWFiLnBuZw?x-oss-process=image/format,png"></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td><code>\rho \sigma \tau \upsilon \phi \chi \psi\omega</code></td> 
   <td><img alt="\rho\sigma\tau\upsilon\phi\chi\psi\omega\!" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzEvMS8zLzExMzZiNzAzMDlkNDRlY2RiYWNiYmE2NmJmNDJjZWI4LnBuZw?x-oss-process=image/format,png"></td> 
   <td></td> 
  </tr> 
  <tr> 
   <th> <p>异体字母</p> </th> 
   <td><code>\Epsilon\epsilon\varepsilon</code></td> 
   <td><img alt="\Epsilon\epsilon\varepsilon" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzkvOS9jLzk5YzcxNWQ2YzZlYjhmYjBjNzc4OGIwNDk2YzE4ZmNmLnBuZw?x-oss-process=image/format,png"></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td><code>\Theta\theta\vartheta</code></td> 
   <td><img alt="\Theta\theta\vartheta" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2MvOC81L2M4NWQyMTA3ZWZhODZkZmU4ZTg5NTRlODEwNDk0MWM2LnBuZw?x-oss-process=image/format,png"></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td><code>\Kappa\kappa\varkappa</code></td> 
   <td><img alt="\Kappa\kappa\varkappa" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzcvYi84LzdiOGIyOWMzNjdhNDZlM2QxNDAzY2I3NmNiYmJmMDI4LnBuZw?x-oss-process=image/format,png"></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td><code>\Pi\pi\varpi</code></td> 
   <td><img alt="\Pi\pi\varpi" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzIvMS81LzIxNWQyYjYxZThiNmZhOTJhMzc0ZWE3ZjZmZDBhZGY2LnBuZw?x-oss-process=image/format,png"></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td><code>\Rho\rho\varrho</code></td> 
   <td><img alt="\Rho\rho\varrho" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzMvMS9hLzMxYWNjYzg2Njk4ZjRiYzY4ZTZhN2ZjNTdkNWFiYTVlLnBuZw?x-oss-process=image/format,png"></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td><code>\Sigma\sigma\varsigma</code></td> 
   <td><img alt="\Sigma\sigma\varsigma" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzYvMy8zLzYzM2U2YTFhNzU3MDRiZmM4Y2NiMGFkM2FhZmEyMmQxLnBuZw?x-oss-process=image/format,png"></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td><code>\Phi\phi\varphi</code></td> 
   <td><img alt="\Phi\phi\varphi\," src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzAvZi9mLzBmZjkxMTU4NjFkOWE1NGYxNTI5MDc0ZGI1ZmVmOTlmLnBuZw?x-oss-process=image/format,png"></td> 
   <td></td> 
  </tr> 
  <tr> 
   <th> <p>已停用字母</p> </th> 
   <td><code>\digamma</code></td> 
   <td><img alt="\digamma" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzIvZi8wLzJmMDU3YjZlNTE0YzhjYTJkOWNmOWEzZTU0OWY4ODY1LnBuZw?x-oss-process=image/format,png"></td> 
   <th> <p><a href="http://zh.wikipedia.org/wiki/%CF%9C" rel="nofollow">Ϝ</a><a href="http://zh.wikipedia.org/wiki/Help:MATH#cite_note-waw-0" rel="nofollow">[1]</a></p> </th> 
  </tr> 
 </tbody> 
</table>

<table> 
 <tbody> 
  <tr> 
   <th colspan="3"> <p>粗体希腊字母</p> </th> 
  </tr> 
  <tr> 
   <th>特征</th> 
   <th>语法</th> 
   <th>效果</th> 
  </tr> 
  <tr> 
   <th> <p>大写字母</p> </th> 
   <td><code>\boldsymbol{\Alpha \Beta \Gamma \Delta \Epsilon \Zeta\Eta \Theta}</code></td> 
   <td><img alt="\boldsymbol{\Alpha\Beta\Gamma\Delta\Epsilon\Zeta\Eta\Theta}" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzkvNC9mLzk0ZmI5YjNhY2MyNzliMzZlNzFjZmZhNjg3YmVkODc0LnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td><code>\boldsymbol{\Iota \Kappa \Lambda \Mu \Nu \Xi \Omicron\Pi}</code></td> 
   <td><img alt="\boldsymbol{\Iota\Kappa\Lambda\Mu\Nu\Xi\Omicron\Pi}" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzgvNS9mLzg1ZjNmZDJmMTYzYjNhZGM1ODc4NmFmNzgyYjA4ZGU3LnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td><code>\boldsymbol{\Rho \Sigma \Tau \Upsilon \Phi \Chi \Psi\Omega}</code></td> 
   <td><img alt="\boldsymbol{\Rho\Sigma\Tau\Upsilon\Phi\Chi\Psi\Omega}" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2MvMC9mL2MwZjI0NzRhZDI0NGEyNmVhNGU2MTUxYmQ4YmQzMmVhLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <th> <p>小写字母</p> </th> 
   <td><code>\boldsymbol{\alpha \beta \gamma \delta \epsilon \zeta\eta \theta}</code></td> 
   <td><img alt="\boldsymbol{\alpha\beta\gamma\delta\epsilon\zeta\eta\theta}" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2MvMS83L2MxN2RlOTUwNDE5MWJmYTMyYTA3YWViOTFkZGI0OTUxLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td><code>\boldsymbol{\iota \kappa \lambda \mu \nu \xi \omicron\pi}</code></td> 
   <td><img alt="\boldsymbol{\iota\kappa\lambda\mu\nu\xi\omicron\pi}" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzcvOS8yLzc5MjgzODNmNWM0ODJjM2Y1NGIxNzRhODU4N2VmMDcyLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td><code>\boldsymbol{\rho \sigma \tau \upsilon \phi \chi \psi\omega}</code></td> 
   <td><img alt="\boldsymbol{\rho\sigma\tau\upsilon\phi\chi\psi\omega}" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2MvMy81L2MzNWFlMmJhMjQ5NWMwMzgwMDA2MWNjZTFhODkxYWM5LnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <th> <p>异体字母</p> </th> 
   <td><code>\boldsymbol{\Epsilon\epsilon\varepsilon}</code></td> 
   <td><img alt="\boldsymbol{\Epsilon\epsilon\varepsilon}" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2MvMy85L2MzOWNlODRjZGNhY2MzZTYxYWNiOTY4ZGYzNDlmOGMyLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td><code>\boldsymbol{\Theta\theta\vartheta}</code></td> 
   <td><img alt="\boldsymbol{\Theta\theta\vartheta}" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2EvZC8zL2FkMzg0MzY1ODBiOTQ5NDgwNjQ2N2M4ODQwYzNiZWNlLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td><code>\boldsymbol{\Kappa\kappa\varkappa}</code></td> 
   <td><img alt="\boldsymbol{\Kappa\kappa\varkappa}" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2MvYS85L2NhOWZmODY3NmNiOWZkYTk2MmU0ZjFhYzg5YzZhM2U2LnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td><code>\boldsymbol{\Pi\pi\varpi}</code></td> 
   <td><img alt="\boldsymbol{\Pi\pi\varpi}" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2EvZC82L2FkNmI4ZDgyODJiZmVlZjNjNTJhMzUxYmI3MWIyMThmLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td><code>\boldsymbol{\Rho\rho\varrho}</code></td> 
   <td><img alt="\boldsymbol{\Rho\rho\varrho}" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzAvMi82LzAyNmI0OGI0NTFmMmY4NTIxODI0M2E0MzVjMGU2MmM4LnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td><code>\boldsymbol{\Sigma\sigma\varsigma}</code></td> 
   <td><img alt="\boldsymbol{\Sigma\sigma\varsigma}" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzkvOS8zLzk5MzgyYmVkY2Q3NjI5NTRlMTBiN2JkNTlkYTEyMTAxLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td><code>\boldsymbol{\Phi\phi\varphi}</code></td> 
   <td><img alt="\boldsymbol{\Phi\phi\varphi}" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzcvNC84Lzc0ODAzNDVhYTI4YzZjNGYwMWQ4MGFiN2Y2Nzk5NmExLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <th> <p>已停用字母</p> </th> 
   <td><code>\boldsymbol{\digamma}</code></td> 
   <td></td> 
  </tr> 
 </tbody> 
</table>

## 括号 ##

<table> 
 <tbody> 
  <tr> 
   <th>功能</th> 
   <th>语法</th> 
   <th>显示</th> 
  </tr> 
  <tr> 
   <td>不好看</td> 
   <td>( \frac{1}{2} )</td> 
   <td><img alt="( \frac{1}{2} )" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzQvMC9hLzQwYWQ5ZDNkMWZjOWE2MWUxNmQyMmQ3ZTNmODU0ZmVjLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td>好看了</td> 
   <td>\left( \frac{1}{2} \right)</td> 
   <td><img alt="\left ( \frac{1}{2} \right )" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzIvOC9iLzI4YmNkNWI4MmNlMGU5MmIyNWU4YTBiNGJkNWJlMjE1LnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
 </tbody> 
</table>

您可以使用 `\left` 和 `\right` 来显示不同的括号：

<table> 
 <tbody> 
  <tr> 
   <th>功能</th> 
   <th>语法</th> 
   <th>显示</th> 
  </tr> 
  <tr> 
   <td>圆括号，小括号</td> 
   <td>\left<strong>(</strong>&nbsp;\frac{a}{b} \right<strong>)</strong></td> 
   <td><img alt="\left( \frac{a}{b} \right)" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzIvOS8wLzI5MDU5Njk1MDBiNDBiMmYyYzcwNzgyMDZlN2UwZTgxLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td>方括号，中括号</td> 
   <td>\left<strong>[</strong>&nbsp;\frac{a}{b} \right<strong>]</strong></td> 
   <td><img alt="\left[ \frac{a}{b} \right]" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzgvNS84Lzg1ODVjOTZmMzU1ZjdlMzAxZmQ1MTQzYmVhMzJlZmFmLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td>花括号，大括号</td> 
   <td>\left<strong>\{ </strong>&nbsp;\frac{a}{b} \right<strong>\}</strong></td> 
   <td><img alt="\left\{ \frac{a}{b} \right\}" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2MvNC9kL2M0ZDRhZjZiYWI5YTBlNjUzMmRkZGQ1MGU3ZDI3MTU4LnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td>角括号</td> 
   <td>\left&nbsp;<strong>\langle</strong>&nbsp;\frac{a}{b} \right&nbsp;<strong>\rangle</strong></td> 
   <td><img alt="\left\langle \frac{a}{b} \right \rangle" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2QvMC82L2QwNmU3MzNjZTcwNWVkMjZhN2UwNDhkYmQyOTQ1MzcxLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td>单竖线，绝对值</td> 
   <td>\left<strong>|</strong>&nbsp;\frac{a}{b} \right<strong>|</strong></td> 
   <td><img alt="\left| \frac{a}{b} \right|" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzQvMC9kLzQwZDZjODI1M2IwOGU4ODAxYTAxYjNmNmU1MDY5YTYyLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td>双竖线，范</td> 
   <td>\left&nbsp;<strong>\|</strong>&nbsp;\frac{a}{b} \right&nbsp;<strong>\|</strong></td> 
   <td><img alt="\left \| \frac{a}{b} \right \|" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2YvMy8wL2YzMGE1YzQxMmQxZTRiNGU3YzYxOTVmZjVkNDdlOTQ3LnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td>取整函数<br> （Floor function）</td> 
   <td>\left&nbsp;<strong>\lfloor</strong>&nbsp;\frac{a}{b} \right&nbsp;<strong>\rfloor</strong></td> 
   <td><img alt="\left \lfloor \frac{a}{b} \right \rfloor" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2MvMC83L2MwN2UxZmM3YzAxNTA4MjhlNTVkYTRlZmUzN2U4YTNmLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td>取顶函数<br> （Ceiling function)</td> 
   <td>\left&nbsp;<strong>\lceil</strong>&nbsp;\frac{c}{d} \right&nbsp;<strong>\rceil</strong></td> 
   <td><img alt="\left \lceil \frac{c}{d} \right \rceil" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzgvNi84Lzg2OGMxZTUyYzMzOWUwMTIwNGFhMWE3N2Q0NGUzYzcxLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td>斜线与反斜线</td> 
   <td>\left&nbsp;<strong>/</strong>&nbsp;\frac{a}{b} \right&nbsp;<strong>\backslash</strong></td> 
   <td><img alt="\left / \frac{a}{b} \right \backslash" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzIvZi8zLzJmM2M1OTA3YzBhNGZjNGZkYTY5ZWI3MTg5MGNlOTUyLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td>上下箭头</td> 
   <td>\left&nbsp;<strong>\uparrow</strong>&nbsp;\frac{a}{b} \right&nbsp;<strong>\downarrow</strong></td> 
   <td><img alt="\pagecolor{White}\left \uparrow \frac{a}{b} \right \downarrow" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2IvZi84L2JmOGRkNmI3NTNjYjZhZWI4MDFlYTIzZGU1MWFkNWJjLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td>\left&nbsp;<strong>\Uparrow</strong>&nbsp;\frac{a}{b} \right&nbsp;<strong>\Downarrow</strong></td> 
   <td><img alt="\pagecolor{White}\left \Uparrow \frac{a}{b} \right \Downarrow" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzMvZC9lLzNkZTc4MjI0NjUxMTVhZGUxMGI0NzYzNGMyMmI2YjdkLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td>\left&nbsp;<strong>\updownarrow</strong>&nbsp;\frac{a}{b} \right<strong>\Updownarrow</strong></td> 
   <td><img alt="\pagecolor{White}\left \updownarrow \frac{a}{b} \right \Updownarrow" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzAvNi9iLzA2YjE1Y2JiYTRkOTM1ZmU4NGExYTUwMzYwM2U0ZWIwLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td>混合括号</td> 
   <td>\left [ 0,1 \right )<br> \left \langle \psi \right |</td> 
   <td><img alt="\left [ 0,1 \right )" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2EvMy84L2EzODc3MWVhZTE3NzhkMGUyMTRmNjU5NmE4ZGMxMzM3LnBuZw?x-oss-process=image/format,png"><br><img alt="\left \langle \psi \right |" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2QvYS8yL2RhMjVmYzE3N2ZkNGM1M2EyYzMzOTljMjU2ODVkZDRjLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td>单左括号</td> 
   <td>\left \{ \frac{a}{b}&nbsp;<strong>\right .</strong></td> 
   <td><img alt="\left \{ \frac{a}{b} \right ." src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoL2MvZS9kL2NlZDJhMmZiNTU4ZmU0OWZhNTYwMThiOWY4ZmQ2OWQ1LnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
  <tr> 
   <td>单右括号</td> 
   <td><strong>\left .</strong>&nbsp;\frac{a}{b} \right \}</td> 
   <td><img alt="\left . \frac{a}{b} \right \}" src="https://imgconvert.csdnimg.cn/aHR0cDovL3VwbG9hZC53aWtpbWVkaWEub3JnL3dpa2lwZWRpYS96aC9tYXRoLzkvYS9jLzlhYzliM2M2ZDIxYzU2ZjViMmI0NzRiMGVhMWM0YjhhLnBuZw?x-oss-process=image/format,png"></td> 
  </tr> 
 </tbody> 
</table>

[Link 1]: http://zh.wikipedia.org/wiki/%E7%A7%AF%E5%88%86
[Link 2]: http://zh.wikipedia.org/wiki/%E5%88%86%E6%95%B0
[Link 3]: http://zh.wikipedia.org/wiki/%E7%9F%A9%E9%98%B5
[Link 4]: http://zh.wikipedia.org/wiki/%E5%B8%8C%E8%85%8A%E5%AD%97%E6%AF%8D