amsmathsymbols
I'm looking for a command in amsmath that makes something like \cupdot in MnSymbol (I hope spell it right…).
Look at the picture below:
i.e. a command that puts a dot instead of the "+".
One more thing: I don't want that the dot will be above the cup sign – the dot should be inside the cup.
\models is defined as (use \pshow\models where \def\pshow#1{{\let\protect\show #1}}):
\mathrel{|}\joinrel\Relbar
In a similar fashion one could define \mmodels:
\DeclareRobustCommand{\mmodels}{\mathrel{||}\joinrel\Relbar}
Here's a visual of the two:
\documentclass{article}
\DeclareRobustCommand{\mmodels}{\mathrel{||}\joinrel \Relbar}
\begin{document}
$\models\ \mmodels$
\end{document}
Perhaps inserting \mkern-2mu between the two vertical rules would look a little better:
\documentclass{report}
\usepackage[leqno]{amsmath}
\makeatletter
\newcommand{\leqnomode}{\tagsleft@true\let\veqno\@@leqno}
\newcommand{\reqnomode}{\tagsleft@false\let\veqno\@@eqno}
\makeatother
\begin{document}
\begin{align}
f(x) &= ax^2 + bx + c \\
g(x) &= dx^2 + ex + f
\end{align}
\reqnomode
\begin{align}
f(x) &= ax^2 + bx + c \\
g(x) &= dx^2 + ex + f \tag{e}
\end{align}
\begin{equation}
a^2+b^2=c^2.\tag{1}
\end{equation}
\leqnomode
\begin{equation}
-\Delta\phi=4\pi k\rho.\tag{2}
\end{equation}
\end{document}
Best Answer
If the preferred math font does not contain the symbol, it can be provided by putting
\cupand\cdottogether:Remarks:
\mathbinkeeps the spacing of a binary operator (like\cup) for the new symbol.\mathpaletteensures that the symbol adopts its size if used in fractions, subscripts, ...Variant with vertically centered dot and
\bigcupdot