On topological spaces of singular density and minimal weight

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Abstract

We introduce a weakening of the generalized continuum hypothesis, which we will refer to as the prevalent singular cardinals hypothesis, and show it implies that every topological space of density and weight אω1 is not hereditarily Lindelöf. The assumption PSH is very weak, and in fact holds in all currently known models of ZFC.

Original languageEnglish
Pages (from-to)135-140
Number of pages6
JournalTopology and its Applications
Volume155
Issue number3
DOIs
StatePublished - 15 Dec 2007
Externally publishedYes

Keywords

  • Cardinal function
  • Hereditarily Lindelöf space
  • Prevalent singular cardinals
  • Singular cardinals combinatorics
  • Singular density

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