LaTeX 各种箭头

$\gets$\leftarrow or \gets$\longleftarrow$\longleftarrow$\nearrow$\nearrow
$\to$\rightarrow or \to$\longrightarrow$\longrightarrow$\searrow$\searrow
$\leftrightarrow$\leftrightarrow$\longleftrightarrow$\longleftrightarrow$\swarrow$\swarrow
$\Leftarrow$\Leftarrow$\Longleftarrow$\Longleftarrow$\nwarrow$\nwarrow
$\Rightarrow$\Rightarrow$\Longrightarrow$\Longrightarrow$\leadsto$\leadsto
$\Leftrightarrow$\Leftrightarrow$\Longleftrightarrow$\Longleftrightarrow$\rightleftharpoons$\uparrow
$\mapsto$\mapsto$\longmapsto$\longmapsto$\uparrow$\downarrow
$\hookleftarrow$\hookleftarrow$\hookrightarrow$\hookrightarrow$\downarrow$\updownarrow
$\leftharpoonup$\leftharpoonup$\rightharpoonup$\rightharpoonup$\updownarrow$\Uparrow
$\leftharpoondown$\leftharpoondown$\rightharpoondown$\rightharpoondown$\Uparrow$\Downarrow
$\rightleftharpoons$\rightleftharpoons$\iff$\iff$\Downarrow$\Updownarrow
updatedupdated2020-03-202020-03-20
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