How to write something underneath \min?

How to type this expression, where has \min on top and \forall at the bottom?

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I'd remove the universal quantifier. –  Marc van Dongen Sep 19 '12 at 18:13

The bottom part is a TeX subscript (like \sum):

\min_{\forall s \in S_j} q_k(s)


Output:

Textstyle vs. Displaystyle

Compile the following code sequence to understand the difference between textstyle and displaystyle:

\documentclass{article}
\def\sample{\min\nolimits_{\forall s \in S_j} q_k(s)}
\begin{document}
\noindent Text-Textstyle: $$\sample$$\\
Text-Displaystyle: $$\displaystyle\sample$$
$\textrm{Text-Textstyle: }\textstyle\sample$$\textrm{Display-Displaystyle: }\sample$
\end{document}


You can also use \nolimits and \limits to force textstyle limits and displaystyle limits respectively:

\min\limits_{\forall s \in S_j} q_k(s)

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hi, it seems this is not in the same format as the picture in the question –  william007 Sep 19 '12 at 16:55
@william007: how it comes out depends on whether you are on displaystyle or textstyle; try inside a $...$. Qrrbrb..: it's a TeX subscript (/nitpick ;)). –  morbusg Sep 19 '12 at 16:57
@william007 morbusg is right. I've updated my answer to explain the difference between textstyle and displaystyle. –  Qrrbrbirlbel Sep 19 '12 at 17:08