Article ID Journal Published Year Pages File Type
4658807 Topology and its Applications 2014 6 Pages PDF
Abstract
Let G be a countably infinite discrete group and let βG be the Stone-Čech compactification of G. Let I denote the finest decomposition of G⁎=βG∖G into closed left ideals of βG with the property that the corresponding quotient space of G⁎ is Hausdorff, and I′ the finest decomposition of G⁎ into closed left ideals of βG. We show that there is a dense subset of points p∈G⁎ such that (βG)p∈I′∖I. In particular, I′ is finer than I.
Related Topics
Physical Sciences and Engineering Mathematics Geometry and Topology
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