Mathematics. the question of whether a compact, simply connected three-dimensional manifold is topologically equivalent to a three-dimensional sphere.


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  • Poinciana

    [poin-see-an-uh] /ˌpɔɪn siˈæn ə/ noun 1. . 2. any of several other tropical trees of the legume family, with showy flowers, as Caesalpina pulcherrima (dwarf poinciana) or Peltophorum pterocarpum (yellow poinciana) /ˌpɔɪnsɪˈɑːnə/ noun 1. any tree of the tropical leguminous genera Caesalpinia (formerly Poinciana) having large orange or red flowers See royal poinciana

  • Poind

    /pɪnd/ verb (transitive) (Scots law) 1. to take (property of a debtor) in execution or by way of distress; distrain 2. to impound (stray cattle, etc)

  • Poindexter

    noun a person who is intelligent but socially inept; a nerd Word Origin either from “Felix the Cat” or “Revenge of the Nerds” n. “nerdy intellectual,” by 1986, U.S. teenager slang, from the character Poindexter, introduced 1959 in the made-for-TV cartoon version of “Felix the Cat.” noun An overly studious person; merv, nerd, pencil neck […]

  • Poinephobia

    noun a fear of punishment Word Origin poin ‘to prick, harass’

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