2025 : 9 : 29
Amir Sahami

Amir Sahami

Academic rank: Associate Professor
ORCID:
Education: PhD.
ScopusId:
HIndex: 0/00
Faculty: Basic Science
Address:
Phone:

Research

Title
On biprojectivity and Connes biprojectivity of a dual Banach algebra with respect to a $w^{*}$-closed ideal
Type
JournalPaper
Keywords
$I$-Connes biprojctivity left $\phi$-contractibility Dual Banach algebras
Year
2024
Journal AUT Journal of Mathematics and Computing
DOI
Researchers Amir Sahami ، S. Fatemeh Shariati ، Mehdi Rostami ، Mona aj

Abstract

In this paper, we introduce a notion of Connes biprojectivity for a dual Banach algebra $A$ with respect to its $w^{*}$-closed ideal $I$, say $I$-Connes biprojectivity. Some matrix algebras and Banach sequence algebras are studied under this new notion. Also with some mild assumptions, the relation between $I$-Connes biprojectivity and left $\phi$-contractibility is given, where $\phi$ is a $w^{*}$-continuous multiplicative linear functional on $A$. As an application, we characterize Connes biprojectivity of some Lipschitz algebras.