English

Pseudocompact C$^*$-algebras

Operator Algebras 2016-09-26 v1 Functional Analysis Logic

Abstract

We study the class of pseudocompact C*-algebras, which are the logical limits of finite-dimensional C*-algebras. The pseudocompact C*-algebras are unital, stably finite, real rank zero, stable rank one, and tracial. We show that the pseudocompact C*-algebras have trivial K_1 groups and the Dixmier property. The class is stable under direct sums, tensoring by finite-dimensional C*-algebras, taking corners, and taking centers. We give an explicit axiomatization of the commutative pseudocompact C*-algebras. We also study the subclass of pseudomatricial C*-algebras, which have unique tracial states, strict comparison of projections, and trivial centers. We give some information about the K_0 groups of the pseudomatricial C*-algebras.

Keywords

Cite

@article{arxiv.1609.06275,
  title  = {Pseudocompact C$^*$-algebras},
  author = {Stephen Hardy},
  journal= {arXiv preprint arXiv:1609.06275},
  year   = {2016}
}

Comments

18 pages

R2 v1 2026-06-22T15:55:46.331Z