I would like to use the upside-down version of \bigsqcup
to denote its dual operation.
The stmaryrd
package provides that symbol, \bigsqcap
, but I have found that these two symbols are rendered in different sizes.
Below are sample code and its output.
\documentclass[12pt]{article}
\usepackage{mathptmx}
\usepackage{stmaryrd}
\begin{document}
$\bigsqcup \bigsqcap \bigcup \bigcap$
\end{document}
As you can see, \bigsqcap
is clearly the odd one out, being slightly bigger than the rest.
Does anyone know how to get \bigsqcap
in the same size as \bigsqcup
?
I need to use the mathptmx
font, so I would appreciate a solution that retains it.
Best Answer
A simple solution is to rotate
\bigsqcup
to get the missing\bigsqcap
:Remarks:
The rotation switches to text mode (
\hbox
).\mathpalette
is the method to get the current math style that we need, when we reenter math in the rotated box for\bigsqcup
. The first argument of\@updown
is the math style (\displaystyle
,\textstyle
, …), the second argument is the unrotated symbol. Thus\@updown
can also be used for the rotation of other symbols.\m@th
suppresses\mathsurround
for the case this value is set to avoid that space that should surround math formulas appears inside the formula.