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