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arxiv: 0912.4624 · v1 · submitted 2009-12-23 · 🧮 math.FA

Module super-amenability for semigroup algebras

classification 🧮 math.FA
keywords modulealgebrabanachsemigroupsuper-amenabilityactionsactsalgebras
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Let $S$ be an inverse semigroup with the set of idempotents $E$. In this paper we define the module super-amenability of a Banach algebra which is a Banach module over another Banach algebra with compatible actions, and show that when $E$ is upward directed and acts on $S$ trivially from left and by multiplication from right, the semigroup algebra $ \ell ^{1}(S)$ is $\ell^{1}(E)$-module super-amenable if and only if an appropriate group homomorphic image of $S$ is finite.

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