Hello,
exists \cup and \bigcup command that includes a dot centered in it? Not, MnSymbol package.
Math & Science ⇒ \dot inside \bigcup
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\dot inside \bigcup
Here is a method to fake this symbol when using the CM fonts:
Code: Select all
\documentclass{article}
\usepackage{etoolbox}
\makeatletter
\providerobustcmd*{\bigcupdot}{%
\mathop{%
\mathpalette\bigop@dot\bigcup
}%
}
\newrobustcmd*{\bigop@dot}[2]{%
\setbox0=\hbox{$\m@th#1#2$}%
\vbox{%
\lineskiplimit=\maxdimen
\lineskip=-0.7\dimexpr\ht0+\dp0\relax
\ialign{%
\hfil##\hfil\cr
$\m@th\cdot$\cr
\box0\cr
}%
}%
}
\makeatother
\begin{document}
$a \bigcupdot a \bigcup a$
\[ \bigcupdot a \bigcup a \]
\[ T_{a \bigcupdot a \bigcup a} \]
\end{document}
Re: \dot inside \bigcup
Thank you for your answer.