deep diving into representation theory for quantum mechanics. Interesting post by woit: "Quantum Theory is Representation Theory" math.columbia.edu/~woit/wordpr

been hearing good things about this moment map thing for generating symmetry transformations in the Hamiltonian formalism instead of the Lagrangian and Noether's Theorem.

"The momentum map generalizes the classical notions of linear and angular momentum".

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physicists initially found Weyl's introduction of representation theory annoying. They called it the "Gruppenpest": the group theory plague. Sounds about right.

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worth it though there’s something really cool about learning the math of the universe

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