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  • Ovojno število in nekaj primerov njegove uporabe
    Vrabec, Jože, 1940-
    In this elementary exposition the winding number is defined. Homotopy invariance of the winding number is stated without proof. The following applications are given: the fundamental theorem of ... algebra, nonexistence of nonsingular vector fields on the 2-sphere, nonexistence of Lie group structures on the 2-sphere, and the Borsuk-Ulam theorem and the some "ham sandwich theorem" in 2 dimensions.
    Vrsta gradiva - članek, sestavni del
    Leto - 1973
    Jezik - slovenski
    COBISS.SI-ID - 8594009