What is the Latex Code for Upper Sum?

[Math Amateur]

 

[topsquark]

Is this what you want?
\sum_{j \in J} --> [math]\sum_{j \in J}[/math]

and
\underset{x \in B_j} {sup} -->[math]\underset{x \in B_j} {sup}[/math]

-Dan

 

[Opalg]

Alternatively, \sup_{x\in B_j} --> $\displaystyle \sup_{x\in B_j}$. (The symbol for sup then appears in Roman type rather than italics.)

 

[Math Amateur]

My thanks to Dan and Opalg …

Peter