English

The extension problem for graph $C^*$-algebras

Operator Algebras 2020-07-07 v2

Abstract

We give a complete KK-theoretical description of when an extension of two simple graph CC^{*}-algebras is again a graph CC^{*}-algebra.

Keywords

Cite

@article{arxiv.1810.12147,
  title  = {The extension problem for graph $C^*$-algebras},
  author = {Søren Eilers and James Gabe and Takeshi Katsura and Efren Ruiz and Mark Tomforde},
  journal= {arXiv preprint arXiv:1810.12147},
  year   = {2020}
}

Comments

Accepted version, to appear in Annals of K-theory

R2 v1 2026-06-23T04:55:52.419Z