Under Up Arrow Text

Question

I'm trying to do something similar to $\underleftarrow{A}$; however with the up arrow, not left or right arrows, i.e., I want to draw a pointer at A. Any suggestion, please?

Answer 1

Will

\newcommand*{\underuparrow}[1]{\underset{\uparrow}{#1}}
$\underuparrow{A}$

help?

You can get rid of using $ also by using \ensuremath:

\newcommand*{\underuparrow}[1]{\ensuremath{\underset{\uparrow}{#1}}}

The MWE:

\documentclass{article}
\usepackage{mathtools}
\begin{document}
\newcommand*{\underuparrow}[1]{\ensuremath{\underset{\uparrow}{#1}}}
\underuparrow{A}
\end{document}

Edit You can add some coloring to spice things up:

\documentclass{article}
\usepackage{mathtools,xcolor}
\begin{document}
\newcommand*{\underuparrow}[1]{\ensuremath{\underset{\color{red}{\uparrow}}{#1}}}
\underuparrow{A}
\end{document}