Recent content by psterphysics

Why did you decide it was worth your time to study it? What book did you use?

Where did I say FA was not "useful" or "needed"? I only asked a question. I've elaborated with a bunch of buzzwords. Do you know what a Caley transform is? Have you ever asked yourself whether it was worth your time to find out? (Not rhetorical questions. Please answer yes/no.)

100 years ago there was a need to put the math of QM on a firmer foundation. Some might assume that that has largely been accomplished. Physics advances. Not sure I understand what you are getting at.

Hadamard states, Weyl algebras, Banach algebras, Stone Theorem, Stone von Neumann Theorem

I explain what I meant by "important" in the next question. Of significant interest to working physicists rather than mathematicians.

Physicists provided the motivation for studying functional analysis (FA) 100 years ago. But is an in depth understanding of FA necessary in 2024? A slightly different way of putting it would be: is there any important work being done by physicists that requires working knowledge of all the...