latex write over arrow
$$ E xrightarrow{alpha} F $$latex write over arrow
$$ E xrightarrow{alpha} F $$text over left right arrow latex
documentclass{article}
usepackage{amsmath}
makeatletter
newcommand{xLeftrightarrow}[2][]{ext@arrow 0099Leftrightarrowfill@{#1}{#2}}
makeatother
begin{document}
$A xLeftrightarrow{mathit{hello}} B$
end{document}Copyright © 2021 Codeinu
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