Category analogue of sup-measurability problem

K. Ciesielski*, S. Shelah

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

A function F : ℝ2 → ℝ is called sup-measurable if Ff : ℝ → ℝ given by Ff (x) = F(x, f(x)), x ∈ ℝ, is measurable for each measurable function f : ℝ → ℝ. It is known that under different set theoretical assumptions, including CH, there are sup-measurable non-measurable functions, as well as their category analogues. In this paper we will show that the existence of the category analogues of supmeasurable non-measurable functions is independent of ZFC. A similar result for the original measurable case is the subject of a work in prepartion by Ros lanowski and Shelah.

Original languageEnglish
Pages (from-to)159-172
Number of pages14
JournalJournal of Applied Analysis
Volume6
Issue number2
DOIs
StatePublished - Dec 2000

Keywords

  • Baire property
  • Composition of functions
  • Sup-measurable functions

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