I have a matrix environment:
\begin{bmatrix}
...
\end{bmatrix}
How can I write below that matrix?
I tried with substack
, so I wrote \end{bmatrix}_{\substack{...}}
That doesn't work as it does with, for example, a sum. How can I write a formula exactly below the matrix?
EDIT: Okay, I found out how to do it myself now by using the array environment
\documentclass[a4paper,12pt, oneside]{article}
\usepackage{amsmath,amsfonts,amssymb,amsopn,amscd}
\begin{document}
\begin{equation*}
\begin{array}{c}
A : =
\begin{bmatrix}
x \\
y \\
z \\
a
\end{bmatrix} \\
x=0
\end{array}
\end{equation*}
\end{document}
\documentclass{...}
and ends with\end{document}
and illustrates your problem.\begin{matrix}\begin{bmatrix}<matrix>\end{bmatrix}\\<formula>\end{matrix}
but some of the context in which you want this would help.