Some counterexamples of $(\phi,\psi)-$amenable -like properties of Banach algebras

Authors

  • Salman Babayi Department of Mathematics, Urmia University, Urmia, P.O. Box 5756151818, West Azarbayjan Province, Iran.
  • Amir Sahami Department of Mathematics, Ilam University, Ilam, P.O. Box 69315-516, Ilam Province, Iran.
  • Seyed Mehdi Kazemi Torbaghan Department of Mathematics, University of Bojnord, Bojnord, P.O. Box 9453155111, Khorasan Shomali Province, Iran.

Keywords:

$(\varphi, \psi)$-approximate biprojective, \psi)$-pseudo- amenable, \psi)$-biflat, Banach algebras.

Abstract

In this note we give some examples that shows that \cite[Theorem 3.4]{gh} and \cite[Theorem 3.7]{gh} is incorrect.

Author Biographies

Salman Babayi, Department of Mathematics, Urmia University, Urmia, P.O. Box 5756151818, West Azarbayjan Province, Iran.

Assistant Professor

Amir Sahami, Department of Mathematics, Ilam University, Ilam, P.O. Box 69315-516, Ilam Province, Iran.

Associated Professor

Seyed Mehdi Kazemi Torbaghan, Department of Mathematics, University of Bojnord, Bojnord, P.O. Box 9453155111, Khorasan Shomali Province, Iran.

Assistant Professor

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Published

2025-10-15

Issue

Vol. 19

Section

Vol. 19, No. 4, (2025)

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