Article ID Journal Published Year Pages File Type
4658167 Topology and its Applications 2015 11 Pages PDF
Abstract

We consider the Stone space of the Boolean algebra, constructed by M.G. Bell (see Example 2.1 in [2]), which is the compactification, BN, of the countable discrete space N  . Here we consider convergent sequences in BN∖NBN∖N.We prove that if a point x∈BN∖Nx∈BN∖N is the limit of some sequence {sn:n∈ω}{sn:n∈ω} from N  , or a point x∈[A]∖Ax∈[A]∖A, where A⊆NA⊆N is a strict anti-chain in N  , then there is a sequence in BN∖NBN∖N, that converges to x.We also prove that if A is a countable discrete set of u  -points in BN∖NBN∖N and x∈[A]∖Ax∈[A]∖A, then x   is not the limit of any sequence of points of BN∖NBN∖N.

Related Topics
Physical Sciences and Engineering Mathematics Geometry and Topology
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