Hi all! Been a while since I was on PF and I greatly regret it. Forgot how great the community was. Anyways on to my point. I'm going into my second ywar of post secondary and planning to major in physics, and have the eventual goal of understanding both General relativity, and Quantum mechanics extremely thoroughly. Although I'm told I'll be given the formula's and some math I'll need IN THE COURSE, I wish to learn the math required seperately, so to best master the physics and understand where the math comes from etc. So my question is; can anyone tell me what branches of mathematics are most useful for General relativity, and/or which ones are best for Quantum mechanics? *I have already taken Calculus 1 & 2, linear algebra, and Statistics (all first year courses) so please be more specific than this! Thanks!