Abstract
Let M n be a closed Riemannian manifold homotopy equivalent to the product of S 2 and an arbitrary (n–2)-dimensional manifold. In this paper we prove that given an arbitrary pair of points on M n there exist at least k distinct geodesics of length at most 20k!d between these points for every positive integer k. Here d denotes the diameter of M n.
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Nabutovsky, A., Rotman, R. Short Geodesic Segments between Two Points on a Closed Riemannian Manifold. Geom. Funct. Anal. 19, 498–519 (2009). https://doi.org/10.1007/s00039-009-0004-8
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DOI: https://doi.org/10.1007/s00039-009-0004-8