xelatex --version
XeTeX 3.14159265-2.6-0.99991 (TeX Live 2014)
bibtex --version
BibTeX 0.99d (TeX Live 2014)
  • \mathrel{\simeq\!\simeq} not what I want.

  • \stackrel{\text{mytext}{\simeq}} the operator not long.

Any idea? Thanks.

  • 1
    My idea is that this is a bad idea. ;-)
    – egreg
    May 14, 2016 at 8:45

2 Answers 2


Based on my answer at Big tilde in math mode, in introduce \reallywidesim and \reallywidesimeq.

\parskip 1ex
$A \reallywidesim{mytext} B \reallywidesimeq{mytext} C$

enter image description here


You can abuse the tilde accent together with a \vrule to build your own \simeq. However, you need a font with an extensible \widetilde for that. The non-free font mtpro2 has this accent.

$A \stackrel{\text{mytext}}{\lower 2.5pt \hbox{$\widetilde{\vrule width 25pt height 3.9pt depth -3.5pt}$}} B$

enter image description here

My advice is to not use the above but rather have something like

\[ A \stackrel{(*)}{\simeq} B \] where $(*)$ is mytext.

enter image description here

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