[Tex/LaTex] Textomega symbol in equation

amsmathsymbols

Is it possible to get an exact \textomega like symbol in equation??

MWE: 

\documentclass[
DIV=12,          
BCOR=5mm,       
]{scrbook}[2015/10/03]

\usepackage{tipa}
\usepackage[
intlimits,
sumlimits
]{amsmath}

\begin{document}

\begin{equation}
E_A =   k\,\phi\,\omega
\end{equation}

I want the same  "\textomega" \, symbol in math mode, if it's possible. 

\end{document}

Best Answer

Since boxes are composed in text mode, by default, one merely needs, in math mode, to employ \mbox{\textomega} to get the upright glyph. If smaller sizes are needed, more work would be needed.

EDITED to take Emma's very good suggestion to use \text rather than \mbox as the enabling macro. While it requires the amsmath package to be loaded, it has the added benefit of adjusting itself to smaller math styles automatically.

RE-EDIT: In comments below, Andrew suggests using \textnormal{\textomega} instead of \text{\textomega}, since the latter can be adversely influenced, as in the case of theorem statements, if the prevailing environment is \textit.

\documentclass[
DIV=12,          
BCOR=5mm,       
]{scrbook}[2015/10/03]

\usepackage{tipa}
\usepackage[
intlimits,
sumlimits
]{amsmath}

\begin{document}

\begin{equation}
E_A =   k\,\phi\,\textnormal{\textomega}
\end{equation}

I want the same  "\textomega" \, symbol in math mode, if it's possible. 

\end{document}

enter image description here

If pdflatex is being used, another option is to \unslant the regular math-mode \omega glyph, in the manner of this answer, Upright Greek font fitting to Computer Modern

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