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
Approximate biflatness and Johnson pseudo-contractibility of some Banach algebras
Type
JournalPaper
Keywords
approximate biflatness; Johnson pseudo-contractibility; Lipschitz algebra; triangular Banach algebra
Year
2020
Journal COMMENTATIONES MATHEMATICAE UNIVERSITATIS CAROLINAE
DOI
Researchers Amir Sahami ، mohamadreza omidi ، Eghbal Ghaderi ، Hamzeh Zangeneeh

Abstract

We study the structure of Lipschitz algebras under the notions of approximate biflatness and Johnson pseudo-contractibility. We show that for a compact metric space X, the Lipschitz algebras Lipα(X) and lipα(X) are approximately biflat if and only if X is finite, provided that 0 < α < 1. We give a necessary and sufficient condition that a vector-valued Lipschitz algebras is Johnson pseudo-contractible. We also show that some triangular Banach algebras are not approximately biflat.