Correction of metrics
Zapiski Nauchnykh Seminarov POMI, Representation theory, dynamical systems, combinatorial methods. Part XX, Tome 390 (2011), pp. 201-209
Citer cet article
Voir la notice du chapitre de livre provenant de la source Math-Net.Ru
We prove that a symmetric nonnegative function of two variables on a Lebesgue space that satisfies the triangle inequality for almost all triples of points is equivalent to some semimetric. Some other properties of metric triples (spaces with structures of a measure space and a metric space) are discussed.
[1] P. R. Halmos, J. von Neumann, “Operator methods in classical mechanics, II”, Ann. Math., 43:2 (1942), 332–350 | DOI | MR | Zbl
[2] M. Gromov, Metric Structures for Riemannian and Non-Riemannian Spaces, Birkhauser, 1998 | MR | Zbl
[3] A. M. Vershik, “Universalnoe prostranstvo Urysona, metricheskie troiki Gromova i sluchainye metriki na naturalnom ryade”, Uspekhi mat. nauk, 53:5 (1998), 57–64 | DOI | MR | Zbl
[4] A. Vershik, Scaling entropy and automorphisms with purely point spectrum, arXiv: 1008.4946v4