English

A relative bicommutant theorem: the stable case of Pedersen's question

Operator Algebras 2018-01-15 v1 Functional Analysis K-Theory and Homology

Abstract

In 1976, D. Voiculescu proved that every separable unital sub-C*-algebra of the Calkin algebra is equal to its (relative) bicommutant. In his minicourse (see reference), G. Pedersen asked in 1988 if Voiculescu's theorem can be extended to a simple corona algebra of a σ\sigma-unital C*-algebra. In this note, we answer Pedersen's question for a stable σ\sigma-unital C*-algebra.

Keywords

Cite

@article{arxiv.1801.03992,
  title  = {A relative bicommutant theorem: the stable case of Pedersen's question},
  author = {Thierry Giordano and Ping W. Ng},
  journal= {arXiv preprint arXiv:1801.03992},
  year   = {2018}
}