Hey, I'm a math major, and I want to take some physics courses. What are some physical topics that have a lot of really interesting math, be it PDEs, analysis, eccetera?
I'm required by my university to take Physics I & II, but I've also taken a class on introductory astrophysics/cosmology. It was very interesting, though not only because of the math. Years ago I took a class called Applied Physics which was pretty good. It covered the mathematics of things in the natural world (trajectories, collisions etc..) and held my attention quite well.