English

On points avoiding measures

Logic 2023-11-13 v1 General Topology

Abstract

We say that an element xx of a topological space XX avoids measures if for every Borel measure μ\mu on XX if μ({x})=0\mu(\{x\})=0, then there is an open UxU\ni x such that μ(U)=0\mu(U)=0. The negation of this property can viewed as a local version of the property of supporting a strictly positive measure. We study points avoiding measures in the general setting as well as in the context of ω\omega^\ast, the remainder of Stone-\v{C}ech compactification of ω\omega.

Keywords

Cite

@article{arxiv.2311.05751,
  title  = {On points avoiding measures},
  author = {Piotr Borodulin-Nadzieja and Artsiom Ranchynski},
  journal= {arXiv preprint arXiv:2311.05751},
  year   = {2023}
}
R2 v1 2026-06-28T13:16:52.463Z