The Steinhaus-Weil Property: II. The Simmons-Mospan Converse
Keywords:
Steinhaus-Weil property, amenability at 1, measure subcontinuity, Simmons-Mospan theorem, Weil topology, interior-points property, Haar measure, Lebesgue decomposition, left Haar null, selective measure, Cameron-Martin spaceAbstract
In this second part of a four-part series (with Parts I, III, IV referring to [BinO4,5,6]), we develop (via Propositions 1, 2 and Theorems 1, 2) a number of relatives of the Simmons-Mospan theorem, a converse to the Steinhaus-Weil theorem (for another, see [BinO1], and for yet others [BinO3, §8.5]). In Part III [BinO5, Theorems 1, 2], we link this with topologies of Weil type.