Is there any branch in math that is not directly or indirectly used in physics?

[naggy]

Just out of curiosity.

 

[rcgldr]

Probably a few of these. I doubt finite field math (for example integer math modulo some other integer) is related to anything physical.

 

[mathman]

There are many subfields within modern algebra. Some of these that are far away from physics include algebraic geometry - anything that was worked on by Andre Weill or Claude Chevellay or their students.