Math & Science ⇒ array in subscript (in math mode)

[rinatex]

Hi,

I'm trying the following:

$\{M_{a'b'}\}$\tiny{$_{\begin{array}{l}a' \geq a \\ b' \geq b\end{array}}$}

for having an array in subscript composed of two rows: a' >= a and b' >= b next to {M_{a'b'}}.

is there a better way to do that??? cause this way causes too many problems:

how can I avoid the space between {M_{a'b'}} and the array (without using 5 '\!')?

without using "\tiny" the array is too big

and anyway it has too much space between the rows


thanx
rinatex

[Stefan Kottwitz]

Hi rinatex,

welcome to the board!
You could use \substack of the amsmath package:

Code: Select all

\documentclass[a4paper,10pt]{article}
\usepackage{amsmath}
\begin{document}
$\{M_{a'b'}\}_{\substack{a' \geq a \\ b' \geq b}}$
\end{document}

Stefan

[rinatex]

thanks a lot, it works great!