>>11099065Id said I have a pretty rough understanding of multivar (and it's pre reqs), Lin alg, and discrete. The majority of my understanding of proofs and applied maths comes from studying books like algorithms by dasgupta which covers things like big O, masters, DP, LP, flows, etc. I really enjoyed looking into where formulas came from and their derivations, especially if there was an intuitive set of first principles I could rely on during exams, so I guess im open to just reading more formal math texts or if there is a collection of papers or lectures that really lays down some fundamentals, that would be great.
