Czechoslovak Mathematical Journal

, Volume 68, Issue 1, pp 243–255 | Cite as

Character Connes amenability of dual Banach algebras

  • Mohammad Ramezanpour


We study the notion of character Connes amenability of dual Banach algebras and show that if A is an Arens regular Banach algebra, then A** is character Connes amenable if and only if A is character amenable, which will resolve positively Runde’s problem for this concept of amenability. We then characterize character Connes amenability of various dual Banach algebras related to locally compact groups. We also investigate character Connes amenability of Lau product and module extension of Banach algebras. These help us to give examples of dual Banach algebras which are not Connes amenable.


dual Banach algebra Connes amenability character amenability locally compact group 

MSC 2010

46H20 46H25 43A07 22D15 


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Copyright information

© Institute of Mathematics of the Academy of Sciences of the Czech Republic, Praha, Czech Republic 2018

Authors and Affiliations

  1. 1.School of Mathematics and Computer ScienceDamghan UniversityDamghanIran

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