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Infinite distributive laws versus local connectedness and compactness properties

  • Marcel Erné*
  • *Corresponding author for this work

Research output: Contribution to journalArticleResearchpeer review

Abstract

Various local connectedness and compactness properties of topological spaces are characterized by higher degrees of distributivity for their lattices of open (or closed) sets, and conversely. For example, those topological spaces for which not only the lattice of open sets but also that of closed sets is a frame, are described by the existence of web neighborhood bases, where webs are certain specific path-connected sets. Such spaces are called web spaces. The even better linked wide web spaces are characterized by F-distributivity of their topologies, and the worldwide web spaces (or C-spaces) by complete distributivity of their topologies. Similarly, strongly locally connected spaces and locally hypercompact spaces are characterized by suitable infinite distributive laws. The web space concepts are also viewed as natural extensions of spaces that are semilattices with respect to the specialization order and have continuous (unary, binary or infinitary) semilattice operations.

Original languageEnglish
Pages (from-to)2054-2069
Number of pages16
JournalTopology and its applications
Volume156
Issue number12
DOIs
Publication statusPublished - 1 Jul 2009

Keywords

  • (Co)frame
  • (Local) base
  • Distributivity
  • Hypercompact
  • Locally connected
  • Specialization order
  • Strongly connected
  • Supercompact
  • Web space

ASJC Scopus subject areas

  • Geometry and Topology

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