English

A generalization of a Baire theorem concerning barely continuous functions

General Topology 2019-01-23 v1

Abstract

We prove that if XX is a paracompact space, YY is a metric space and f:XYf:X\to Y is a functionally fragmented map, then (i) ff is σ\sigma-discrete and functionally FσF_\sigma-measurable; (ii) ff is a Baire-one function, if YY is weak adhesive and weak locally adhesive for XX; (iii) ff is countably functionally fragmented, if XX is Lindel\"{o}ff. This result generalizes one theorem of Rene Baire on classification of barely continuous functions.

Keywords

Cite

@article{arxiv.1901.06819,
  title  = {A generalization of a Baire theorem concerning barely continuous functions},
  author = {Olena Karlova},
  journal= {arXiv preprint arXiv:1901.06819},
  year   = {2019}
}
R2 v1 2026-06-23T07:17:17.794Z