math-modesymbols
I think that when writing math Detexify is a very nice tool — verging on the indispensable.
When I am at home or in the office it is quite handy to use (the android version would be great, unfortunately it's not working anymore); but if I am not connected (say, abroad or on a plane) it is obviously not working.
Is there any standalone version that I can install locally? (I use Linux, but probably can use other versions too).
Actually Detexify always adds the necessary package to a symbol after presenting possible matches to what you have drawn. But you also can click on the „symbols“ button and enter the command. Here, too, the necessary package is added. So, in this case you will need the marvosym package.
I couldn't find any existing symbols. But, one option would be to use tikz to draw them:
\documentclass{article}
\usepackage{amsmath}
\usepackage{tikz}
\newcommand{\toReversed}{\mathrel{\tikz [x=1.4ex,y=1.4ex,line width=.14ex, baseline] {\draw (0,0.5) -- (1,0.5); \draw [<-] (0.95,0.5) -- (1,0.5);}}}%
\newcommand{\fromReversed}{\mathrel{\tikz [x=1.4ex,y=1.4ex,line width=.14ex, baseline] {\draw (0,0.5) -- (1,0.5); \draw [<-] (0.05,0.5) -- (0,0.5);}}}%
\begin{document}
$A \toReversed B \fromReversed C$
\end{document}
Best Answer
Sure, as the Haskell code is on GitHub:
However, it is not straight-forward to do so as some of the packages have changed. Additionally, it seems to me that setting a local Haskell server up is not very common.
Alternatively, you can use my project
hwrt. It should be relatively straight-forward to install. See http://pythonhosted.org/hwrt/installation.html to install it locally. It is completely ready packaged for offline usage (as a Python Flask webserver).If you have problems with the installation you can leave a comment or send an email to me (info@martin-thoma.de).