Abstract
Let (M, g) and (M, \({\bar{g}}\)) be two Riemannian metrics which are pointwise projectively equivalent, i.e. they have the same geodesics as point sets. We prove that the pointwise projective equivalence is trivial, if (M, g) is a noncompact complete manifold which has at most quadratic volume growth and nonnegative total scalar curvature, and (M,\({\bar{g}}\)) has nonpositive Ricci curvature.
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Mathematics Subject Classifications (2000): 53C22, 58J05
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Kim, S. Volume and Projective Equivalence Between Riemannian Manifolds. Ann Glob Anal Geom 27, 47–52 (2005). https://doi.org/10.1007/s10455-005-2570-9
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DOI: https://doi.org/10.1007/s10455-005-2570-9