label double arrows in both directions
2,436
The excellent Mathmode
document explains how to make extensible arrows of all kinds (§38; pp.78-79). Here is an xleftrightarrow
:
\documentclass{article}
\usepackage{mathtools, amssymb}
\makeatletter
\newcommand\xlongleftrightarrow[2][]{%
\ext@arrow 0059{\longleftrightarrowfill@}{#1}{#2}%
}
\def\longleftrightarrowfill@{%
\arrowfill@ ← \relbar → }
\makeatother
\begin{document}
\begin{equation*}
A \xlongleftrightarrow[\quadα\quad]{γ\quadχ}B%
\xlongleftrightarrow[\alpha]{γ} C \xlongleftrightarrow[ζ\,η\,θ\,ι\,\varkappa]{\,α\,β\,γ\,δ\,ε\,}D
\end{equation*}
\end{document}
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Author by
User1291
Updated on March 05, 2020Comments
-
User1291 over 3 years
How can I do something like this
$L_1 \xrightarrow[\alpha]{\xleftarrow{\gamma}}L_2$
where both arrows are of the same length?
-
Henri Menke over 7 yearsIs
$L_1 \xleftrightharpoons[\gamma]{\alpha} L_2$
acceptable? (might need themathtools
package instead ofamsmath
) -
User1291 over 7 years@HenriMenke Good call, but unfortunately not in this particular case. I'm trying to get that into Freeplane which - unfortuantely - does not come with mathtools (or at least I have not yet found an option that would allow me to use
xleftrightharpoons
).
-
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User1291 over 7 yearsThank you. But I'd prefer two arrows to avoid ambiguity. Doesn't have to be straight arrows, if that helps.
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Bernard over 7 yearsIt seems I had misunderstood what you were asking for…
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Steven B. Segletes over 7 yearsPerhaps the OP wants left/right harpoons?
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Bernard over 7 yearsI really have no idea.