michael_nielsen

When you study entropy: "The time development operator in quantum theory is unitary, because the Hamiltonian is hermitian." Uh-huh.

@RitaJKing That's a pleasant trip down memory lane, for me!

@michael_nielsen can you tell me what it means?

@RitaJKing Hmm. Explanation depends a bit on your math background. Most useful thing for me to know: have you studied matrices at all?

@michael_nielsen *very* minimally

@RitaJKing But you remember what a matrix is (basically, an array of numbers)?

@michael_nielsen conceptually familiar with matrix yes