English

New approaches to remote points

General Topology 2026-06-26 v1

Abstract

For a given Tychonoff space XX, a point pβ(X)Xp\in \beta(X)\setminus X is called {\em remote} if pp is not in the closure of any nowhere dense subset of XX. In this paper, we characterize spaces with remote points in terms of certain topological ultrafilters, measures, and compact-like properties corresponding to the ideal consisting of nowhere dense sets. It is shown that the space of remote points is homeomorphic to a subspace of the Stone space taken over the smallest Boolean algebra containing all open and nowhere dense sets. Also, we show that the space of remote points of R\mathbb R is ω\omega-bounded.

Cite

@article{arxiv.2606.27943,
  title  = {New approaches to remote points},
  author = {Serhii Bardyla and Jaroslav Šupina},
  journal= {arXiv preprint arXiv:2606.27943},
  year   = {2026}
}