Get a black \mathring symbol

Question

How can I get a black \mathring circle above variable, same as \mathring except the circle is "filled"?

possible duplicate of How to put a big dot (and circle) over a variable? — Caramdir, May 17 '11 at 05:29

egreg · Answer 1 · 2011-06-19T09:56:30.023

Only the Latin Modern fonts allow for fonts smaller than 5pt (other scalable font families should not need the change of family)

\usepackage{accents}
\newcommand{\sbullet}{%
  \hbox{\fontfamily{lmr}\fontsize{4}{0}\selectfont\textbullet}}

$\mathring{W}\accentset{\sbullet}{W}$

A more general definition might be

\usepackage{accents}
\makeatletter
\newcommand{\sbullet}{%
  \hbox{\fontfamily{lmr}\fontsize{.4\dimexpr(\f@size pt)}{0}\selectfont\textbullet}}
\DeclareRobustCommand{\mathbullet}{\accentset{\sbullet}}
\makeatother

enter image description here

score 4 · Answer 2 · edited Jun 10 '20 at 12:32

4

Would \dot{x} do?

enter image description here

doesn't need any packages as fat as I know.

edited Jun 10 '20 at 12:32

Community

1

answered Jun 19 '11 at 09:32

romeovs

9,102

score 3 · Answer 3 · answered Jun 19 '11 at 03:29

\documentclass{article}
\usepackage{amsmath}
\begin{document}
  $\overset{\bullet}{x}\quad\mathring{x}$
\end{document}

The placement is clearly not very satisfied compared to \mathring. But I think is the a solution with minimal dependence on availability of fonts. Better solutions will depend on font packages specific commands.

enter image description here

Get a black \mathring symbol

3 Answers3