Hostname: page-component-586b7cd67f-l7hp2 Total loading time: 0 Render date: 2024-11-28T16:23:39.681Z Has data issue: false hasContentIssue false

Amenability and topological centres of the second duals of Banach algebras

Published online by Cambridge University Press:  17 April 2009

F. Ghahramani
Affiliation:
Department of Mathematics, University of Manitoba, Winnipeg R3T 2N2, Canada e-mail: [email protected]
J. Laali
Affiliation:
Department of Mathematics, Teacher Training University, 49 Mofateh Avenue, Tehran, Iran
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

Let  be a Banach algebra and let ** be the second dual algebra of  endowed with the first or the second Arens product. We investigate relations between amenability of ** and Arens regularity of  and the rôle topological centres in amenability of **. We also find conditions under which weak amenability of ** implies weak amenability of .

Type
Research Article
Copyright
Copyright © Australian Mathematical Society 2002

References

[1]Dales, H.G., Rodriguez-Palacios, A. and Velasco, M.V., ‘The second transpose of a derivation’, (preprint 2000).Google Scholar
[2]Ghahramani, F., Loy, R.J. and Willis, G.A., ‘Amenability and weak amenability of second conjugate Banach algebras’, Proc. Amer. Math. Soc. 129 (1996), 14891497.CrossRefGoogle Scholar
[3]Gourdeau, F., ‘Amenability of the second dual of a Banach algebra’, Studia Math. 125 (1997), 7581.CrossRefGoogle Scholar
[4]Granirer, E.E., ‘Amenability and semisimplicity for second duals of quotients of Fourier algebra’, J. Austral. Math. Soc. Ser. A 63 (1997), 289296.CrossRefGoogle Scholar
[5]Johnson, B.E., ‘Cohomology in Banach algebras’, Mem. Amer. Math. Soc. 127 (1972).Google Scholar
[6]Johnson, B.E., ‘Approximate diagonals and cohomology of certain annihilator Banach algebras’, Amer. J. Math. 94 (1972), 685698.CrossRefGoogle Scholar
[7]Lau, A.T. and Loy, R.J., ‘Amenability of convolution algebras’, Math. Scand. 79 (1996), 283296.CrossRefGoogle Scholar
[8]Lau, A.T., Loy, R.J. and Willis, G.A., ‘Amenability of Banach and C*-algebras on locally compact groups’, Studia Math. 119 (1996), 161178.Google Scholar
[9]Lau, A.T. and Loy, R.J., ‘Weak amenability of Banach algebras on locally compact groups’, J. Funct. Anal. 145 (1997), 175204.CrossRefGoogle Scholar
[10]Lau, A.T. and Ülger, A., ‘Toplogical centers of certain dual algebras’, Trans. Amer. Math. Soc. 348 (1996), 11911212.CrossRefGoogle Scholar