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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

marked as duplicate by Werner, Svend Tveskæg, user13907, Masroor, Ruben Dec 18 '14 at 0:50

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  • 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
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    @Werner Note text mode – egreg Nov 17 '14 at 22:36
  • 2
    @Sigur I guess that Greeks often use their sigmas in text mode. – egreg Nov 17 '14 at 22:53
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    However, the circumflex accent doesn't go over a sigma. – egreg Nov 17 '14 at 23:10

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

  • Yes, I found the way to do that! Thank you! – Federica Nov 25 '14 at 9:31
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