English

Ulam stability for some classes of C*-algebras

Operator Algebras 2016-07-04 v2

Abstract

We prove some stability results for certain classes of C*-algebras. We prove that whenever AA is a finite-dimensional C*-algebra, BB is a C*-algebra and ϕ ⁣:AB\phi\colon A\to B is approximately a ^*-homomorphism then there is an actual ^*-homomorphism close to ϕ\phi by a factor depending only on how far is ϕ\phi from being a ^*-homomorphism and not on AA or BB.

Keywords

Cite

@article{arxiv.1601.05445,
  title  = {Ulam stability for some classes of C*-algebras},
  author = {Paul McKenney and Alessandro Vignati},
  journal= {arXiv preprint arXiv:1601.05445},
  year   = {2016}
}

Comments

Minor additions, 15 pages