Amenability constants for semilattice algebras
نویسندگان
چکیده
منابع مشابه
Amenability Constants for Semilattice Algebras
Abstract. For any finite unital commutative idempotent semigroup S, a unital semilattice, we show how to compute the amenability constant of its semigroup algebra l(S), which is always of the form 4n+1. We then show that these give lower bounds to amenability constants of certain Banach algebras graded over semilattices. Our theory applies to certain natural subalgebras of Fourier-Stieltjes alg...
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ژورنال
عنوان ژورنال: Semigroup Forum
سال: 2008
ISSN: 0037-1912,1432-2137
DOI: 10.1007/s00233-008-9115-z