When trying to write an e-mail address, there are always problems with the @ sign.
Solutions I've seen suggested are using some verbatim environment (more difficult in footnotes) and using a math-mode @.
What is the correct way to do this?
[Tex/LaTex] What’s the best way to write e-mail addresses
addressessymbols
Related Solutions
Edit: Following TH's advice, this would be a better command to use:
\newcommand{\trel}{\mathrel{\mathsurround=0pt \mbox{\raisebox{1.2pt}{\tiny \textbf{\textbar }}$\rhd$}}}
(I decided to explicitly say \mathsurround=0pt rather than just calling \m@th because that way, if Mike wants to paste this into the top of his document, he won't have to call \makeatletter)
Original: I don't know what built-in symbols would correspond to the one you're describing, but if you're just trying to get something done you could use this:
\newcommand{\trel}{\mbox{\raisebox{1.2pt}{\tiny \bf \textbar }$\rhd$}}
(and then use \trel every time you want to use this relation).
It's a huge hack, but, like I said, it might be enough to get you by.
\setminus should be what you are after.
\documentclass{article}
\usepackage{amssymb} % for \smallsetminus
\begin{document}
\[ \mbox{setminus: } A \setminus B,\quad \mbox{smallsetminus: } A \smallsetminus B, \quad \mbox{backslash: } A \backslash B\]
\end{document}
Note that you can find more information here on How to look up a symbol?. In particular, you have the Comprehensive LaTeX symbols and the website Detexify. There is also this post which was mentioned earlier in a comment
Best Answer
Another thing one can to with the hyperref package is to use the
hrefcommandwhich has the advantage that when clicked-on in an electronic document, it will (ideally) call up the mailer and cue up the e-mail address.