Let be a geodesic metric measure space. Consider a geodesic in the -Wasserstein space. Then as goes to, the support of and the support of have to overlap, provided an upper bound on the densities holds. We give a more precise formulation of this self-intersection property. Given a geodesic of and, we consider the set of times for which this geodesic belongs to the support of. We prove that is a point of Lebesgue density 1 for this set, in the integral sense. Our result applies to spaces satisfying. The non-branching property is not needed. © 2014 London Mathematical Society.
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Titolo: | Self-intersection of optimal geodesics | |
Autori: | ||
Data di pubblicazione: | 2014 | |
Rivista: | ||
Abstract: | Let be a geodesic metric measure space. Consider a geodesic in the -Wasserstein space. Then as goes to, the support of and the support of have to overlap, provided an upper bound on the densities holds. We give a more precise formulation of this self-intersection property. Given a geodesic of and, we consider the set of times for which this geodesic belongs to the support of. We prove that is a point of Lebesgue density 1 for this set, in the integral sense. Our result applies to spaces satisfying. The non-branching property is not needed. © 2014 London Mathematical Society. | |
Handle: | http://hdl.handle.net/11571/1165288 | |
Appare nelle tipologie: | 1.1 Articolo in rivista |