johnson amenability for topological semigroups
نویسندگان
چکیده
–a notion of amenability for topological semigroups is introduced. a topological semigroup s iscalled johnson amenable if for every banach s -bimodule e , every bounded crossed homomorphism froms to e* is principal. in this paper it is shown that a discrete semigroup s is johnson amenable if and only if1(s) is an amenable banach algebra. also, we show that if a topological semigroup s is johnson amenable,then it is amenable, but the converse is not true.
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عنوان ژورنال:
iranian journal of science and technology (sciences)ISSN 1028-6276
دوره 34
شماره 2 2010
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