2026/2/4
Amir Sahami

Amir Sahami

Academic rank: Associate Professor
ORCID:
Education: PhD.
H-Index: 0
Faculty: Basic Science
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E-mail: a.sahami [at] ilam.ac.ir
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Research

Title
JOHNSON PSEUDO-CONTRACTIBILITY OF CERTAIN BANACH ALGEBRAS AND THEIR NILPOTENT IDEALS
Type
JournalPaper
Keywords
Johnson pseudo-contractibility, semigroup algebra, approximately complemented ideal.
Year
2019
Journal ANALYSIS MATHEMATICA
DOI
Researchers Mehdi Askari Sayah ، Abdolrasoul Pourabbas ، Amir Sahami

Abstract

In this paper, we study the notion of Johnson pseudo-contractibility for certain Banach algebras. For a bicyclic semigroup S, we show thatℓ1(S) is not Johnson pseudo-contractible. Also for a Johnson pseudo-contractible Banach algebra A, we show that A has no non-zero complemented closed nilpotent ideal.