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On ϕ-amenability of Banach algebras

Published online by Cambridge University Press:  01 January 2008

EBERHARD KANIUTH
Affiliation:
Institut für Mathematik, Universität Paderborn, D-33095 Paderborn, Germany. e-mail: [email protected]
ANTHONY T. LAU
Affiliation:
Department of Mathematical and Statistical Sciences, University of Alberta, Edmonton, Canada T6G 2G1. e-mail: [email protected]
JOHN PYM
Affiliation:
Department of Mathematics, University of Sheffield, Sheffield S3 7RH. e-mail: [email protected]

Abstract

Generalizing the notion of left amenability for so-called F-algebras [12], we study the concept of ϕ-amenability of a Banach algebra A, where ϕ is a homomorphism from A to ℂ. We establish several characterizations of ϕ-amenability as well as some hereditary properties. In addition, some illuminating examples are given.

Type
Research Article
Copyright
Copyright © Cambridge Philosophical Society 2008

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References

REFERENCES

[1]Bonsall, F. F. and Duncan, J.. Complete Normed Algebras (Springer-Verlag, 1973).CrossRefGoogle Scholar
[2]Bunce, J. W.. Characterizations of amenable and strongly amenable C*-algebras. Pacific J. Math 43 (1972), 563572.CrossRefGoogle Scholar
[3]Bunce, J. W.. Finite operators and amenable C*-algebras. Proc. Amer. Math. Soc 56 (1976), 145151.Google Scholar
[4]Dales, H. G.. Banach algebras and automatic continuity. London Mathematical Society Monographs (Clarendon Press, 2000).Google Scholar
[5]Doran, R. S. and Wichmann, J.. Approximate identities and factorization in Banach modules Lecture Notes in Math. 768. (Springer-Verlag, 1979).CrossRefGoogle Scholar
[6]Dunford, N. and Schwartz, J. T.. Linear Operators I (Wiley, 1988).Google Scholar
[7]Eymard, P.. L'algébre de Fourier d'un groupe localement compact. Bull. Soc. Math. Franc 92 (1964), 181236.CrossRefGoogle Scholar
[8]Forrest, B. E. and Runde, V.. Amenability and weak amenability of the Fourier algebra. Math. Z 250 (2005), 731744.CrossRefGoogle Scholar
[9]Johnson, B. E.. Cohomology in Banach algebras. Mem. Amer. Math. Soc 127 (Providence, 1972).Google Scholar
[10]Johnson, B. E.. Non-amenability of the Fourier algebra of a compact group. J. London Math. Soc. (2) 50 (1994), 361374.CrossRefGoogle Scholar
[11]Lau, A. T.. Characterization of amenable Banach algebras. Proc. Amer. Math. Soc 70 (1978), 156160.Google Scholar
[12]Lau, A. T.. Analysis on a class of Banach algebras with applications to harmonic analysis on locally compact groups and semigroups. Fund. Math 118 (1983), 161175.Google Scholar
[13]Monfared, M. S.. Character amenability of Banach algebras, preprint.Google Scholar
[14]Namioka, I.. Folner's condition for amenable semigroups. Math. Scand 15 (1964), 1828.CrossRefGoogle Scholar
[15]Nasr-Isfahani, R.. Fixed point characterization of left amenable Lau algebras. Internat. J. Math. Sci. 61–64 (2004), 33333338.CrossRefGoogle Scholar
[16]Nasr-Isfahani, R.. Strongly amenable *-representations of Lau *-algebras. Rev. Roumaine Math. Pures Appl 49 (2004), 545556.Google Scholar
[17]Pier, J-P.. Amenable Banach algebras. Pitman Reserarch Notes in Mathematics 172 (Longman Scientific/Technical, 1988).Google Scholar
[18]Schaefer, H. H.. Topological Vector Spaces (Springer-Verlag, 1971).CrossRefGoogle Scholar