# Make list of formulas 3 columns

I've changed my earlier question to a more clearer question.

I'm searching for a more easier way to list different formulas in 2 or 3 columns next to each other to create an overview of all the formulas I have to know.

I've used tabular, but that doesn't work with the formulas in mathmode. After that I thought to use the multicols-environment but then, the formulas were not good aligned. Some are to the top, middle or bottom aligned but not all the same way.

Do someone have a solution to make these lists in 3 or 2 columns easier?

• Why are you using multicols here? – Johannes_B Oct 15 '15 at 12:05
• I use multicols to get the formulas next to each other. Maybe there is a better method? – iJonathan Oct 15 '15 at 12:49
• Formulas in tabular do work – user31729 Oct 15 '15 at 15:36
• Only with using $...$. But I want to use $$...$$ because the font-size of the formula is bigger and there is space under each formula – iJonathan Oct 15 '15 at 15:39
• @iJonathan: No, you don't want to use $$...$$ -- that's outdated! ;-) – user31729 Oct 15 '15 at 15:40

Math in tabular works, in p-columns you can use $..$. Beside this you can always force display style with the \displaystyle command.

\documentclass[]{scrartcl}
\usepackage{tabularx,array}
\begin{document}
\noindent
\begin{tabularx}{\textwidth}{XXX}
$\sum_x =1$ & $\sum_y =1$ & $\sum_z =1$
\end{tabularx}

$\begin{array}{>{\displaystyle}lll} \sum_x =1 & \sum_y =1 & \sum_z =1 \end{array}$
\end{document}


This is a mixed approach, using glossaries to store the formulas, but this is not really necessary.

The core feature is the Q columntype, using a p cell in conjunction with $ and $, i.e. th LaTeX replacement of $$...$$

This way, the formulas are not aligned at the = sign.

\documentclass[headings=small,12pt,a4paper]{scrartcl}

\usepackage[utf8]{inputenc}
\usepackage{booktabs}
\usepackage{array}
\usepackage{mathtools}

\usepackage{glossaries}

\newglossaryentry{Einstein}{%
name={\ensuremath{E = mc^2}},
description={}
}

\newglossaryentry{Pythagoras}{%
name={ \ensuremath{c^2 = a^2 + b^2 }},
description={}
}

\newglossaryentry{TrigPythagoras}{%
name={ \ensuremath{\sin^2 x + \cos^2 x \equiv 1 }},
description={}
}

\makeglossaries

\newcolumntype{Q}{>{$}p{5cm}<{$}}

\begin{document}

{%
\centering

\begin{tabular}{*{3}{Q}}
\multicolumn{3}{c}{List of formulas} \tabularnewline
\toprule[1.5pt]
\gls{Einstein} & \gls{Pythagoras} & \gls{TrigPythagoras} \tabularnewline
\left(x^2\right)' = 2x \tabularnewline
\end{tabular}

\end{document}