English

A Hilbert C*-module with extremal properties

Operator Algebras 2022-08-02 v1 Functional Analysis

Abstract

We construct an example of a Hilbert C*-module which shows that Troitsky's theorem on the geometrical essence of A-compact operators between Hilbert C*-modules is not extendable to a not countably generated module case (even in the case of a stronger uniform structure, which is also introduced). In addition, the constructed module admits no frames.

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Cite

@article{arxiv.2107.03782,
  title  = {A Hilbert C*-module with extremal properties},
  author = {Denis Fufaev},
  journal= {arXiv preprint arXiv:2107.03782},
  year   = {2022}
}

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R2 v1 2026-06-24T03:59:51.232Z