# vertical equal sign

I am looking to create a vertical equal sign that might function similarly to an underbrace. I often use this symbol when taking notes on paper.

 (x+z) + (y+d) = 10
||      ||
5       5


The alignment is not entirely perfect in this example but I believe the idea comes across.

• You could also use \underbrace{..}_{{}=5}.
– Werner
Commented Mar 2, 2013 at 9:46
• @Werner Yes that's functional but I'd personally prefer it with no braces and a rotated equals sign. Commented Mar 2, 2013 at 9:49

Here is another way of achieving this. You use the command \equalto{equation}{value}.

\documentclass{scrartcl}

\usepackage{mathtools}

\newcommand{\verteq}{\rotatebox{90}{$\,=$}}
\newcommand{\equalto}[2]{\underset{\scriptstyle\overset{\mkern4mu\verteq}{#2}}{#1}}

\begin{document}

$\equalto{(x + z)}{5} + \equalto{(y + d)}{5} = 10$

\end{document}


And this is the output:

As you can see, I added some spacing to the vertical equal manually (and some horizontal spacing to the \equalto command), of course, you can tweak both to get the exact output you want.

• This has the right spaces around the equal signs, but reduces the size of the "5" which is incorrect -- the "5" shoul have the same size at the "10", which does not. Commented Oct 31, 2022 at 4:45
• I found adding \displaystyle to the second argument of overset fixes the size problem, and I found the kerning unnecessary for my needs.  \newcommand{\verteq}[2]{ \underset{ \overset{ \rotatebox{90}{$\,=$} }{\displaystyle{#2}} }{\displaystyle{#1}} }  Commented Jun 3, 2023 at 18:17

thanks to detexify, I just found that if you are using amsmath,amssymb then you have access to \shortparallel

\usepackage{amsmath}
\usepackage{amssymb}
\def\stackbelow#1#2{\underset{\displaystyle\overset{\displaystyle\shortparallel}{#2}}{#1}}

$$\stackbelow{(x+z)}{5}+\stackbelow{(y+d)}{5} = 10.$$


The result, obtained thanks to quicklatex:

• It is not really good because it differs too much from the horizontal equal sign right there on the equation. Commented Oct 30, 2022 at 1:06