I want to become a theoretical physicist. I was wondering the LEVEL of maths i will need to do. For example i downloaded a book for sets "INTRODUCTION TO SET THEORY" BY HRBACEK, JECH. It has got a lot about sets. But when i look into another book it has limited concepts. So i don't have any idea how much math i need to do. and please recommend some books. before doing calculus i need to know about sets, relations, functions and conituity. so please recommend some books. It's like i want to completely study both mathematics and physics.