Hi. I am hoping to pursue high energy physics in graduate school. I have a few extra math electives I need to take for my math degree(majoring in math and physics). I was wondering if these classes would be of any real relevance Abstract Algebra Algebraic Geometry Lie Algebras Differential Geometry Manifold Theory Riemannian geometry They are all grad courses, but I can take about 3 of them. The prereq for Manifolds is Diff Geo, and the prereq for Riemannian is Manifolds. The same reasoning goes for the algebra sequence. Basically I was thinking of either taking the algebra courses or the geometry ones. Would this be a good idea? I guess algebraic geometry is as it sounds also? edit: Also, by the time I will be able to take any of these(spring semester next year), I will have taken graduate linear algebra and real analysis 2 at the undergrad level.