Convex optimization, numerical methods books like Burden/Faires or Trefethen/Bau. If you want to get a good fundamental grasp, intro to real analysis books. Ca

Convex optimization, numerical methods books like Burden/Faires or Trefethen/Bau. If you want to get a good fundamental grasp, intro to real analysis books. Cambridge and Oxford have good reading lists to prep for 1st year of their programs https://www.balliol.ox.ac.uk/admissions/undergraduate-admissions/mathematics-reading-list https://www.balliol.ox.ac.uk/admissions/undergraduate-admiss... ____________________ and the math appendix/pre chapters of Goodfellow et al Deep Learning and http://www.cs.huji.ac.il/~shais/UnderstandingMachineLearning/copy.html http://www.cs.huji.ac.il/~shais/UnderstandingMachineLearning...