What is the code for the symbol used to represent the tangential part of a vector? For the normal part, one can use $v^{\perp}$, but how about the tangent part?
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Steven B. Segletes
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Eduardo Longa
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Here is a \perp, upside down, called here \tang, and it obeys math styles.
\documentclass{article}
\usepackage{graphicx,stackengine,scalerel}
\def\tang{\ThisStyle{\abovebaseline[0pt]{\scalebox{-1}{$\SavedStyle\perp$}}}}
\begin{document}
$\perp$ versus $\tang$\par
$V_\perp$ versus $V_{\tang}$\par
$\scriptstyle V_\perp$ versus $\scriptstyle V_{\tang}$\par
\end{document}
As egreg points out, the symbol actually pre-exists as \top, but I didn't have my TeX references handy to find it at the time.
Steven B. Segletes
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@EduardoLonga
http://ctan.org/pkg/stackengineandhttp://ctan.org/pkg/scalerel. – Steven B. Segletes Sep 24 '16 at 03:42 -
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1@egreg I figured it must exist, but no one spoke up at that hour, and I happen to be away from my TeX references, so I followed my instinct..."when in doubt, stack it out." – Steven B. Segletes Sep 24 '16 at 11:34
$V_\parallel$– Steven B. Segletes Sep 24 '16 at 03:15\top(table 195 in the current version of the “Comprehensive List”). You can of course define a better name, say\newcommand{\tang}{\top}. – egreg Sep 24 '16 at 06:38