• Title of article

    HFD groups in the Solovay model

  • Author/Authors

    Szeptycki، نويسنده , , Paul J. and Tomita، نويسنده , , Artur H. Swiergiel، نويسنده ,

  • Issue Information
    دوماهنامه با شماره پیاپی سال 2009
  • Pages
    4
  • From page
    1807
  • To page
    1810
  • Abstract
    Hajnal and Juhász proved that under CH there is a hereditarily separable, hereditarily normal topological group without non-trivial convergent sequences that is countably compact and not Lindelöf. The example constructed is a topological subgroup H ⊆ 2 ω 1 that is an HFD with the following property(P) ojection of H onto every partial product 2 I for I ∈ [ ω 1 ] ω is onto. uch group has the necessary properties. We prove that if κ is a cardinal of uncountable cofinality, then in the model obtained by forcing over a model of CH with the measure algebra on 2 κ , there is an HFD topological group in 2 ω 1 which has property (P).
  • Keywords
    Non-trivial convergent sequences , Random real , Topological group , Hereditarily finally dense , Countably compact , Solovay model
  • Journal title
    Topology and its Applications
  • Serial Year
    2009
  • Journal title
    Topology and its Applications
  • Record number

    1582073