I am currently in a theoretical astrophysics research group. By the end of my undergrad, I plan to have done 3 years there. However, only recently did I consider doing theoretical, not experimental, physics. But I am worried that I won't have completed enough maths to be accepted anywhere. Right now, by the end of my undergrad, I should have taken: Calculus I, II, & III Differential Equations Matrix Algebra Engineering Mathematics Methods of Theoretical Physics I & II (which focuses on PDEs and Group Theory) Unfortunately, most math courses require a foundations in math prerequisite, so I don't have much room to take more maths. Is this enough to get into grad school to study theoretical physics? I could try to shuffle around my schedule to fit in the foundations course and another math like analysis or topology. I have taken many upper level physics electives already, so I guess I could reluctantly cut back a few.