how to write underneath max in formula latex

Question

can someone one please help to write this formula in latex

\begin{equation} 
\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) 
\end{equation} 

Answer 1

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}
\begin{equation} 
\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{equation} 
\end{document}