Title of article :
φ-Connes amenability of dual Banach algebras
Author/Authors :
Ghaffari ، A. - Semnan University , Javadi ، S. - Semnan University
Abstract :
Generalizing the notion of character amenability for Banach algebras, we study the concept of φ-Connes amenability of a dual Banach algebra A with predual A∗, where φ is a homomorphism from A onto C that lies in A∗. Several characterizations of φ-Connes amenability are given. We also prove that the following are equivalent for a unital weakly cancellative semigroup algebra l1(S):(i) S is χ-amenable.(ii) l1(S) is χ^-Connes amenable.(iii) l1(S) has a χ^-normal, virtual diagonal.
Keywords :
Banach algebras , Connes amenability , derivation , dual Banach algebra , virtual diagonal , weak* , weak* continuous
Journal title :
Bulletin of the Iranian Mathematical Society
Journal title :
Bulletin of the Iranian Mathematical Society