How to Put \smallsmile or \smallfrown on Top of a Letter

symbols

I would like to have a \smallsmile on top of a letter "T". Is there a way this can be done?

Best Answer

`\stackrel`

For example, \stackrel can be used:

\documentclass{article}
\usepackage{MnSymbol}% for \smallsmile and \smallfrown

\begin{document}
\[
  \mathord{\stackrel{\smallsmile}{T}}
  \neq
  \mathord{\stackrel{\smallfrown}{T}}
\]
\[
  \mathord{\mathop{T}\limits^{\smallsmile}}
  \neq
  \mathord{\mathop{T}\limits^{\smallfrown}}
\]
\end{document}

Text mode accents

\documentclass{article}
\usepackage{textcomp}% \newtie, \capitalbreve
\begin{document}
\u{T}, \capitalbreve{T} vs. \newtie{T}
\end{document}

Math mode accents

At least \smallsmile could be set as \breve accent:

\documentclass{article}

\begin{document}
\[
  \breve{T}
\]
\end{document}

Related Solutions

[Tex/LaTex] Customized accent symbol

You can use accents package.

\documentclass{article}
\usepackage{amssymb}
\usepackage{accents}

\begin{document}

$\accentset{\therefore}{A}$

\end{document}

DON'T use \stackrel, it is designed for math relations. And don't use \overset from amsmath, the postion is not correct.

[Tex/LaTex] How to produce a longer \sim with a small letter on top

\usepackage{amsmath,graphicx}
\newcommand{\widesim}[2][1.5]{
  \mathrel{\overset{#2}{\scalebox{#1}[1]{$\sim$}}}
}

$A \widesim{S} B$

$A \widesim[2]{SS} B$

If the scaling is not excessive, the symbol should render well. The optional argument, that tells LaTeX how much to scale horizontally, should not be more than 2.5, otherwise some artifacts will appear. The default value is, as you requested, 1.5.