On a theorem of banach and kuratowski and K-lusin sets

  • Tomek Bartoszyński
  • , Lorenz Halbeisen

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

In a paper of 1929, Banachan d Kuratowski proved–assuming the continuum hypothesis–a combinatorial theorem which implies that there is no non-vanishing σ additive finite measure μ on R which is defined for every set of reals. It will be shown that the combinatorial theorem is equivalent to the existence of a K-Lusin set of size 20 and that the existence of such sets is independent of ZFC + ¬CH.

Original languageEnglish
Pages (from-to)1223-1231
Number of pages9
JournalRocky Mountain Journal of Mathematics
Volume33
Issue number4
DOIs
StatePublished - 2003

Keywords

  • Cardinal characteristics
  • Combinatorial set theory
  • Consistency results
  • Continuum hypothesis
  • Lusin sets

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