How to add text under symbol in equation ?

Question

I was trying to make something like this

(something similar to \substack in \sum) in equation. How to do this ?

Answer 1

You should place the expression in the subscript, as shown below. Most LaTeX books explain this.

\documentclass{article}

\begin{document}

Display mode: \[ \max_{1 \leq j \leq n} \]

Inline mode: $\max_{1 \leq j \leq n}$, $\max\limits_{1 \leq j \leq n}$.

\end{document}

Note how I used \limits to force the subscript under the operator in inline mode (if you think you need \limits, think again — maybe the defaults look better after all!).

If you find that the subscripted expression is too long and introduces excessive whitespace, use the \smashoperator macro from the mathtools package.

Answer 2

Solved this for Inline mode by using $\underset{1 \leq j \leq n}{\max}$, however this approach requires the amsmath package.

Answer 3

I would solve it like this:

\documentclass{scrartcl}
\usepackage{amsmath}
\begin{document}  
\[
    \max\limits_{1\leq j\leq n}
\]  
\end{document}