>>10398796Pugh, Rudin, Abbott. You need nothing else other than a solid differential geometry text like O'neill (one with forms, frames and general Stokes, save the pure diff geo for grad school and buy Lee for it). Get Grinfeld for tensor analysis and Lang for Complex, Strang for Linear Algebra/ODE, Devore's Mathematical Stats, Intro to Statistical Learning by James, Statistical Rethinking for Bayesian models, Regression Modeling Strategies for multilinear, PDE just get Logan or some Dover book since they all kinda suck at undergrad level. Go into a closet for two years and stay in there like Freddy Mercury, coming out only when you're ready to do it with a bang.