there is no nonvanishing continuous tangent vector field on the sphere

listen to the pronunciation of there is no nonvanishing continuous tangent vector field on the sphere
الإنجليزية - الإنجليزية
hairy ball theorem
there is no nonvanishing continuous tangent vector field on the sphere

    الواصلة

    there I·s no non·van·ish·ing con·ti·nu·ous tan·gent vec·tor field on the sphere

    النطق

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