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Urysohn

Last-modified: 2012-09-17 (月) 17:24:20

Definition Edit

  • A topological space (X, τ) is said to be a Urysohn space if every pair of distinct points have disjoint closed neighbourhoods.

Property Edit

Reference Edit

  1. Porter, J. R., Strongly Hausdorff spaces. Acta Math. Acad. Sci. Hungar. 25 (1974), 245–248.
  2. Paul Ramprasad, Bhattacharyya P., On pre-Urysohn spaces. (English summary), Bull. Malaysian Math. Soc. (2) 22 (1999), no. 1, 23–34.