27 research outputs found

    Alien Registration- Westerland, Alfred C. (Richmond, Sagadahoc County)

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    https://digitalmaine.com/alien_docs/9663/thumbnail.jp

    Alien Registration- Westerland, Alfred C. (Richmond, Sagadahoc County)

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    https://digitalmaine.com/alien_docs/9663/thumbnail.jp

    Configuration spaces in topology and geometry

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    C2 - Journal Articles Unreferee

    Dyer-Lashof operations in the string topology of spheres and projective spaces

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    C1 - Refereed Journal Articl

    Black Holes in Spherically Symmetric Dust-Filled Closed Universes

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    We investigate the problem of defining black holes in closed universes. We do this by first finding all spherically symmetric marginally trapped surfaces in the dust-filled Tolman S 3 universes, and test three definitions which have been proposed for black holes in closed universes. The definitions of Wheeler and Tipler are easy to apply, but we find that Hayward's definition is quite complicated
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