I am reading Glimm and Jaffe to try and get a more formal understanding of quantum mechanics and they keep insisting that operators are essentially self-adjoint. I understand from QM we want some form of hermitian/self-adjoint-ness. However Why do we not lose anything important when merely looking at essentially self adjoint?
2026-04-03 04:01:33.1775188893
What do we lose by going from self adjoint to essentially self adjoint
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