I Gelfand-M Naimark 1943 + Segal 1947 GNS construction; modern modern foundational text + 2024 noncommutative-geometry Connes IM Beilinson.
I Gelfand-M Naimark 1943 + Segal 1947 GNS construction; modern modern foundational text + 2024 noncommutative-geometry Connes IM Beilinson.