Ctrl+G

Ctrl+Shift+G

Ctrl+K Arrow 简单箭头 $\leftarrow \uparrow \downarrow \to$

Ctrl+K Alt+Arrow 双向简单箭头 $\leftrightarrow \updownarrow$

Ctrl+K Shift+Arrow 粗箭头 $\Rightarrow \Leftarrow$

Ctrl+K Alt+Shift+Arrow 双向粗箭头 $\Leftrightarrow \Updownarrow$

Ctrl+K S supset $\supset$

Ctrl+K Shift+U $\bigcup$

Ctrl+K U $\cup$

Ctrl+K Shift+X $\cap$

Ctrl+K U $\bigcap$

Ctrl+K O $\varnothing$ \varnothing

Ctrl+K E $\in$ \in

Ctrl+K < $\le$ \le

Ctrl+K > $\ge$ \ge

Ctrl+K ~ $\approx$ \approx

Ctrl+K P $\propto$ \propto

\[\varsigma \]