Hello all, I've got one more semester before I earn my physics MS, and I have space for one or two extra courses. I am going into oceanography, and I would like to have a strong foundation in math in order to understand the theory I'll encounter as well as possible. Lots of physical oceanography papers that I glance at are very intimidating, for they seem to pull from some pretty high mathematics in addition to advanced fluid dynamics. I never took a proofs course. I wish I had, since it's a "requirement" for taking upper div courses like PDE's and advanced linear algebra. So I'm wondering if I should rely on my experience proving things in physics classes to get me through those courses, or if it makes sense to take the slow road and do Proofs officially. I guess I would also like to ask if these are the right courses to be thinking about, and if there are others that I should consider. I am planning on taking 2nd semester Jackson E&M to get a better grounding in radiation theory and the math that goes along with that. Thanks!