# Physics notation [duplicate]

I really don't know how to write that 'Y' in latex. I have tried many methods but I didn't succeed. Any help will be appreciated.

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• I changed the tag as this clearly isn't related to biblatex. Are you talking about the Y, or the Y with the underline? – Johannes_B Aug 16 '15 at 11:07
• Y with the underline – rhondagarcia Aug 16 '15 at 11:08
• \underline{Y} – Sigur Aug 16 '15 at 11:10

If you don't want the underline to extend that far over the symbols' “boundaries”, you might want to consider using the accents package for the macro \underaccent{<accent>}{<glyph>}. See the following MWE for an illustration:

\documentclass{article}
\usepackage{accents}
\begin{document}
$\underaccent{\bar}{Y}$ vs.\ $\underline{Y}$
\end{document}


\underline{Y}