English

Lifting Normal Elements in Nonseparable Calkin Algebras

Operator Algebras 2014-03-26 v1

Abstract

We use the remarkable distance estimate of Ilya Kachkovskiy and Yuri Safarov, to show that if HH is a nonseparable Hilbert space and KK is any closed ideal in B(H)B(H) that is not the ideal of compact operators, then any normal element of B(H)/KB(H)/K can be lifted to a normal element of B(H)B(H).

Keywords

Cite

@article{arxiv.1403.6228,
  title  = {Lifting Normal Elements in Nonseparable Calkin Algebras},
  author = {Ye Zhang and Don Hadwin and Yanni Chen},
  journal= {arXiv preprint arXiv:1403.6228},
  year   = {2014}
}
R2 v1 2026-06-22T03:33:38.615Z