English

Connes-biprojective dual Banach algebra

Functional Analysis 2015-01-27 v1

Abstract

In this paper, we introduce a new notion of biprojectivity, called Connes-biprojective, for dual Banach algebras. We study the relation between this new notion to Connes-amenability and we show that, for a given dual Banach algebra A \mathcal{A} , it is Connes-amenable if and only if A \mathcal{A} is Connes-biprojective and has a bounded approximate identity. Also, for an Arens regular Banach algebra A \mathcal{A} , we show that if A \mathcal{A} is biprojective, then the dual Banach algebra A \mathcal{A} ^{**} is Connes-biprojective.

Keywords

Cite

@article{arxiv.1501.06029,
  title  = {Connes-biprojective dual Banach algebra},
  author = {Ahmad Shirinkalam and A. Pourabbas},
  journal= {arXiv preprint arXiv:1501.06029},
  year   = {2015}
}
R2 v1 2026-06-22T08:12:01.044Z