Bijective preimages of ω 1

Christopher Good*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


We study the structure of spaces admitting a continuous bijection to the space of all countable ordinals with its usual order topology. We relate regularity, zero-dimensionality and pseudonormality. We examine the effect of covering properties and ω1 -compactness and show that locally compact examples have a particularly nice structure assuming MA + CH. We show that various conjectures concerning normality-type properties in products can be settled (modulo set-theory) amongst such spaces.

Original languageEnglish
Pages (from-to)125-142
Number of pages18
JournalTopology and its Applications
Issue number2
Publication statusPublished - 1997


  • ω
  • ω-compactness
  • Countable ordinals
  • Covering properties
  • Intersection topologies
  • Normality in products

ASJC Scopus subject areas

  • Geometry and Topology


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