منابع مشابه
Subsemigroups of Cancellative Amenable Semigroups
We generalize a theorem of Frey by giving sufficient conditions for a subsemigroup T of a cancellative left amenable semigroup S to be left amenable. In particular, we show that if S is left amenable and T does not contain a free subsemigroup on two generators, then T is left amenable as well.
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Conditions are found on a sequence of probability measures pn on a locally compact abelian group G so that, for any strongly continuous unitary representation of G, J" Utfd/x„ will converge to a [/-invariant function. These conditions are applied in the case where the group is the integers. Introduction. In a recent paper [3] Greenleaf discusses summing sequences in amenable locally compact gro...
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ژورنال
عنوان ژورنال: Michigan Mathematical Journal
سال: 1973
ISSN: 0026-2285
DOI: 10.1307/mmj/1029001063