English

On a problem of Talagrand concerning separately continuous functions

General Topology 2023-06-22 v2

Abstract

We construct a separately continuous function e:E×K{0,1}e:E\times K\to\{0,1\} on the product of a Baire space EE and a zero-dimensional compact space KK such that no restriction of ee to any non-meager Borel set in E×KE\times K is continuous. The function ee provides a negative solution of Talagrand's problem in \cite{T}.

Cite

@article{arxiv.1809.05799,
  title  = {On a problem of Talagrand concerning separately continuous functions},
  author = {Volodymyr Mykhaylyuk and Roman Pol},
  journal= {arXiv preprint arXiv:1809.05799},
  year   = {2023}
}
R2 v1 2026-06-23T04:07:36.210Z