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Hausdorff space

American  
[hous-dawrf, houz-] / ˈhaʊs dɔrf, ˈhaʊz- /

noun

Mathematics.
  1. a topological space in which each pair of points can be separated by two disjoint open sets containing the points.


Etymology

Origin of Hausdorff space

Named after Felix Hausdorff (1868–1942), German mathematician, who first described it