English

On questions which are connected with Talagrand problem

General Topology 2016-01-14 v1

Abstract

We prove the following results. 1. If XX is a α\alpha-favourable space, YY is a regular space, in which every separable closed set is compact, and f:X×YRf:X\times Y\to\mathbb R is a separately continuous everywhere jointly discontinuous function, then there exists a subspace Y0YY_0\subseteq Y which is homeomorphic to βN\beta\mathbb N. 2. There exist a α\alpha-favourable space XX, a dense in βNN\beta\mathbb N\setminus\mathbb N countably compact space YY and a separately continuous everywhere jointly discontinuous function f:X×YRf:X\times Y\to\mathbb R. Besides, it was obtained some conditions equivalent to the fact that the space Cp(βNN,{0,1})C_p(\beta\mathbb N\setminus\mathbb N,\{0,1\}) of all continuous functions x:βNN{0,1}x:\beta\mathbb N\setminus\mathbb N\to\{0,1\} with the topology of point-wise convergence is a Baire space.

Keywords

Cite

@article{arxiv.1601.03163,
  title  = {On questions which are connected with Talagrand problem},
  author = {V. V. Mykhaylyuk},
  journal= {arXiv preprint arXiv:1601.03163},
  year   = {2016}
}
R2 v1 2026-06-22T12:28:26.542Z