# how to write underneath max in formula latex

$$\max\limits_{{P^{\circ}_t(j)}} E_{t}\sum_{s=0}^{\infty}\zeta^s M_{t,t+s} \left[P^{\circ}_{t+s}(j)-\mathcal{MC}_{t+s}(j)\righ‌​t]Y_{t+s}(j)$$


I take it the main issue is the typesetting of the curly braces around the material immediately below "max". Just change

\max_{{P^{\circ}_t(j)}}


to

\max_{\{P^{\circ}_t(j)\}}


Remember that in order to typeset curly braces, you must type \{ and \}, not just { and }.

No need for the \limits directive, by the way.

To fully reproduce the equation shown in the screenshot, you also need to provide \mid t items in two of the subscripts.

\documentclass{article}
\begin{document}
$$\max_{\{P^{\circ}_t(j)\}} E_{t} \sum_{s=0}^{\infty} \zeta^s M_{t,t+s} \left[ P^{\circ}_{t+s\mid t}(j) - \mathcal{MC}_{t+s}(j) \right] Y_{t+s\mid t}(j)$$
\end{document}

• My problem was that everything inside {} was going to the right of max. I do not want {}, so I have only single {} without \{\}. The solution was to include \limits – Marcel Oct 19 '20 at 15:07
• @Marcel - Were you using \max in inline math mode or in display math mode? In both the OP's use case and in my answer, \max is used in display math mode -- in which case it's not necessary to use \limits. If, in contrast, \max is used inline math mode, then \limits is indeed needed if the objective is to place the argument below "max". – Mico Oct 19 '20 at 18:56
• It was in cases environment inside align environment so I guess inline math mode? – Marcel Oct 20 '20 at 1:37
• @Marcel - Indeed, inside a cases environment \textstyle, aka inline math style, is in use. – Mico Oct 20 '20 at 16:04
• This answer shows how to use \limits – Nagabhushan S N Jan 17 at 16:26