Hi, I will be a senior next year, and I am thinking of taking a physics class that deals with quantum mechanics. I am a math major, and have taken variety of math courses (e.g. real analysis, abstract algebra, complex variables, advanced linear algebra, and etc.) as well as first-year physics course (calc-based). Right now, I am really interested in learning quantum mechanics (and possibly other topics in physics as well, but so far QM seems like the most interesting one), and I have a few options to study this subject: 1. The first quarter of the second-year physics sequence deals with a little bit of relativity and QM. For this course, I have no problem with prerequisites, since I've taken the first-year physics and intro ODE already. The text for this course will likely to be Physics for Scientists and Engineers by Giancoli, which I used in the first-year physics, and thought it was pretty basic. I also had a professor for this course in my first-year physics as well, and I thought he was a good professor. This sequence only deals with QM just for the first quarter--the remainder of the sequence deals with statistical mechanics and thermodynamics (which might be an interesting topic to study as well). 2. There is upper-division QM course for physics major. The prerequisite for this course is upper division EM, but the professor who is teaching this course said it's not necessary (and he thought my math background should be strong enough). The text for this course is Griffiths' Introduction to Quantum Mechanics. Never had this professor before, but I've heard a fair number of positive things about him. And this is a one-year sequence, and it will all be QM. Personally, I'd like to challenge myself and take the latter sequence, but if that is too challenging for me, I wouldn't mind taking the former option. Also, despite its coolness, are there any benefits for a math major to take this course? It seems like a lot of math is applied in this field in a pretty interesting way... Thanks!