I am new to MathOverflow.

I am a master of mathematics student. I am studying research papers as a part of my masters project. I wanted to ask if questions in research papers ( regarding what I am not able to understand in the paper can be asked on MathOverflow or they must be asked on Math Stack Exchange?

Can someone please tell

Edit 1-> I have edit word "doubt " to " what I am not able to understand in the paper" .

questionwhen they saydoubt- here is a related discussion at Mathematics Meta: What exactly might non-native speakers mean by “doubt”? $\endgroup$ – Martin Sleziak Jan 17 '20 at 13:20