2

I want to rotate the \multimap command by 180 degrees. I tried:

\newcommand{\rotmultimap}{\mathbin{{\rotatebox[origin=c]{180}{$\multimap$}}}}

Everything works fine until I use \rotmultimap in a subscript or superscript environment. TeX does not adjust (that is decrease) the size of \rotmultimap as it does for \multimap. How do I fix this?

Improve this question
0

1 Answer 1

Reset to default
4

I guess instead of rotating the symbol you just want to reflect it:

\documentclass{article}

\usepackage{graphicx,amssymb}

\makeatletter
\newcommand*{\multimapinv}{\mathbin{\mathpalette\multimap@inv\relax}}% sure about \mathbin?
\newcommand*{\multimap@inv}[2]{\reflectbox{\m@th$#1\multimap$}}
\makeatother

\begin{document}
$a \multimap b \multimapinv c$\par
$\scriptstyle a \multimap b \multimapinv c$\par
$\scriptscriptstyle a \multimap b \multimapinv c$
\end{document}

enter image description here

(Are you sure about \mathbin? \multimap is a \mathrel.)

On the other hand, some fonts (e.g. newtx, newpx) have the symbol already as \multimapinv.

Improve this answer

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .