English

Infinite games and chain conditions

General Topology 2015-07-09 v1

Abstract

We apply the theory of infinite two-person games to two well-known problems in topology: Suslin's Problem and Arhangel'skii's problem on GδG_\delta covers of compact spaces. More specifically, we prove results of which the following two are special cases: 1) every linearly ordered topological space satisfying the game-theoretic version of the countable chain condition is separable and 2) in every compact space satisfying the game-theoretic version of the weak Lindel\"of property, every cover by GδG_\delta sets has a continuum-sized subcollection whose union is GδG_\delta-dense.

Keywords

Cite

@article{arxiv.1507.02134,
  title  = {Infinite games and chain conditions},
  author = {Santi Spadaro},
  journal= {arXiv preprint arXiv:1507.02134},
  year   = {2015}
}
R2 v1 2026-06-22T10:07:58.888Z