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Two Special Simply Connected Spaces of Nonpositive Curvature
Authors:Ionin  V K
Institution:(1) Sobolev Institute of Mathematics, Novosibirsk
Abstract:We construct two examples of spaces homeomorphic to R n (nge3) each of which has a closed geodesic and admits no isoperimetric inequality. The first is a complete polyhedral metric space of nonpositive curvature, and the second is an incomplete Riemannian space with nonpositive sectional curvatures.
Keywords:metric  simplex  face  curvature  manifold  geodesic  space
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