StyVrt wrote:thanks for the reply diogenes.
well, my masters' cgpa is actually not so great, and what i have mentioned is the rough usa equivalent (hence the concern), but both these masters were very 'industrial' applied math program. can my 'other' achievements (including papers, attendance in a lot of seminar, current efforts) & test scores outshine them? any tip on how should i present myself?
Just keep one or more salt shakers at hand; but here we go:
It is really hard to transform international grades into US grades etc. So, while maybe your grades are just "ok," I have no idea what they mean relative to other grading schemes. It could be the case that your grades are outstanding relative to your class, but that your school has grade deflation etc, or vice versa.
Regardless, I would ask one, or more of your professors to make a quick note along the lines that "X has ok grades, but they do not reflect his true awesomeness etc."
However, it seems you know what you like and have the actions to back it up. So, I would apply to schools that focus on the areas of logic you like (nothing new) and write about your current and future research in your SOP. That would be one element that I would stamp all over your application.