Take the 2-minute tour ×
TeX - LaTeX Stack Exchange is a question and answer site for users of TeX, LaTeX, ConTeXt, and related typesetting systems. It's 100% free, no registration required.

I'm trying to create a symbol \diffeo for "diffeomorphic" and \isomet for "isometric".

I'd like it to look exactly like \approx $\approx$, but with three lines for the first one; and three lines with the middle being straight for the second one:

enter image description here enter image description here

where approx is the symbol

enter image description here.

share|improve this question

1 Answer 1

up vote 5 down vote accepted

The first of the following macros is in the Comprehensive List of LaTeX Symbols (texdoc symbols, with TeX Live), where it is called \threesim; the second one has been built similarly.

\newcommand*{\diffeo}{% 
  \mathrel{\vcenter{\offinterlineskip
  \hbox{$\sim$}\vskip-.35ex\hbox{$\sim$}\vskip-.35ex\hbox{$\sim$}}}}

\newcommand*{\isomet}{%
  \mathrel{\vcenter{\offinterlineskip
  \hbox{$\sim$}\vskip-.85ex\hbox{$-$}\vskip-.55ex\hbox{$\sim$}}}}
share|improve this answer
    
I've searched Latex comprehensive symbol list before, but never found those two symbols. Don't know why they didn't add them as a built-in control and add a picture of it. I also checked Detexify (detexify.kirelabs.org/classify.html), but never got any suggestions. Thank you very much. –  Leon Jul 2 '11 at 20:15
2  
It's on page 104, but I admit that I know where to look even without remembering the command's name. ;-) I built the second one just now. –  egreg Jul 2 '11 at 20:21

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.