I am an Undergraduate student ready to enter into Graduate School. I will be studying Mathematics. In my Undergraduate studies, I came across various Problem books and followed some of them. The results have been outstanding. I wanted to know if there are any more problem books which I missed or should follow apart from the ones listed below:
- Problems in Mathematical Analysis by Kaczor & Nowak, Vol 1,2,3
- Berkeley Problems in Mathematics
- Challenging Problems in Linear Algebra by Fuzhen Zhang