How to place a symbol under or over another symbol in an equation?

Questions
1

image
I want to place d in D under max like in the picture

2

Hello @nhanncv! Don’t hesitate to take a look at the maths documentation at Math – Typst Documentation.

Are you having a particular issue? It would help if you share your current code.

I can reproduce your picture below

$
max_(d in D) min_(s in S(d)) f(d, s)
$