A Characterisation of Locally Compact Amenable Subsemigroups
A Characterisation of Locally Compact Amenable Subsemigroups
Abstract In this paper, we prove that if S is a locally compact semigroup and T a locally compact Borel measurable subsemigroup of S , then T has a topological left invariant mean if and only if there is a topological left T -invariant mean M on S such that …