markdown 编辑器:
Unicode Arrows:
← → ↑ ↓ ↚ ↛ ↮
X → Y; X ↛ Y
Unicode Math Symbols :
⊂ ⊃ ⊄ ⊅ ⊆ ⊇ ⊈ ⊉
X ⊂ Y; X ⊄ Y
LaTeX:
$X \leftarrow Y$ $X \rightarrow Y$
$X \nleftarrow Y$ $X \nrightarrow Y$
$X \not\leftarrow Y$ $X \not\rightarrow Y$
$X \overset F \rightarrow Y$ $X \overset F \longrightarrow Y$
$X \overset P \rightarrow Y$ $X \overset P \longrightarrow Y$
$X \overset {传递} \rightarrow Y$ $X \overset {传递} \longrightarrow Y$
$(Sno,Cno) \overset F \rightarrow Grade$
$X \stackrel {F} {\longrightarrow} Y$
LaTeX:
$X \subset Y$ $X \supset Y$ $X \not\subset Y$ $X \not\supset Y$
$X \subseteq Y$ $X \supseteq Y$ $X \nsubseteq Y$ $X \nsupseteq Y$
REF:
http://xahlee.info/comp/unicode_arrows.html
http://xahlee.info/comp/unicode_math_operators.html
https://blog.csdn.net/Artoria_QZH/article/details/103310704