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math.OA2023
Villadsen algebras
Cristian Ivanescu, Dan Kucerovsky
C*-algebras are rings, sometimes nonunital, obeying certain axioms that ensure a very well-behaved representation theory upon Hilbert space. Moreover, there are some well-known fea…
math.OA2023
Co-actions, Isometries and isomorphism classes of Hilbert modules
Dan Z. Kucerovsky
We show that a A-linear map of Hilbert A-modules is induced by a unitary Hilbert module operator if and only if it extends to an ordinary unitary on appropriately defined envelopin…