Packages   amsmath   amssymb   array

The amsmath Package

Documentation amsmath
Categories math
Description

Essential commands and environments for typesetting mathematics.

Options 
\usepackage{amsmath}
Examples
\begin{align*}
  E &= mc^2 &\qquad G &= oe^4 \\
  F &= nd^3 &\qquad H &= pf^5
\end{align*}

amssymb array booktabs

\begin{tabular}{lcr}
  \toprule
  left & center & right \\
  \midrule
  1 & 2 & 3 \\
  4 & 5 & 6 \\
  \bottomrule
\end{tabular}