How to write a tilde over a sigma?

Question

Good evening to everybody here.. My problem is how to write a "tilde" over a symbol (sigma for the precision) in the text mode.. Thank you so much

Possible duplicate: How to type \sim above another symbol x? Use $\tilde{\sigma}$ . — Werner, Nov 17 '14 at 22:34
Welcome to TeX.SX! How do you type the sigma, to begin with? Is the “tilde” the Greek circumflex accent? — egreg, Nov 17 '14 at 22:34
In my opinion, the use of "text mode" here is not used correctly. We'll wait for the OP to clarify. — Werner, Nov 17 '14 at 22:48
@egreg, how to write a sigma in text mode? I can only imagine $\sigma$ . — Sigur, Nov 17 '14 at 22:50
@Sigur I guess that Greeks often use their sigmas in text mode. — egreg, Nov 17 '14 at 22:53
@egreg: only ancient greek has a circumflex accent. Modern Greek only has an acute accent, so this is not a problem for most today Greek people – apart from the fact that accents can happen only with vowels or diphtongs. — Bernard, Nov 17 '14 at 23:31

score 4 · Answer 1 · answered Nov 17 '14 at 23:06

4

If by "text mode" you mean you don't want the sigma to look like it's typeset in math mode you can try using the upgreek package. Compare below.

\documentclass[border=1mm]{standalone}
\usepackage{upgreek}
\begin{document}
$\tilde{\sigma}\tilde{\upsigma}$
\end{document}

enter image description here

answered Nov 17 '14 at 23:06

erik

Yes, I found the way to do that! Thank you! – Federica Nov 25 '14 at 09:31
You're welcome! If this answered your question, please consider accepting this answer by clicking on the tick/checkmark to the left of the answer. This shows other people that this is "the correct answer", in your opinion, and assigns points to the answerer and also to you. The question will then be handled as "done" which is important for the housekeeping of the site. – erik Nov 25 '14 at 13:42

1 Answers1