trying to build a solid math library for stats/ML/DL, need a sanity check on my picks[D]

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engineering student here, decent calc and linear algebra background from continuum mechanics coursework, already comfortable with ML basics through transformers and modern architectures. want to go deep on the actual math now, not just intuition videos, real derivations, and books that build from intuition up to advanced stuff. big thing for me is actually seeing how the math applies inside the models, not just abstract theory sitting next to it. most modern models are fundamentally probabilisti