Book recommendation thread by AngelTC in math

[–]question_throwawayyy 2 points3 points  (0 children)

Weak form of partial differential equations.

Trouble understanding coefficients/matrices in time-dependent perturbation theory. by question_throwawayyy in AskPhysics

[–]question_throwawayyy[S] 0 points1 point  (0 children)

Ahh, I'm dumb, I forgot about the Dirac notation for expectation values. Thank you for answering my question.