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BV functions and fractional Laplacians on Dirichlet spaces (1910.13330v1)

Published 28 Oct 2019 in math.MG, math-ph, math.FA, math.MP, and math.PR

Abstract: We study $L^p$ Besov critical exponents and isoperimetric and Sobolev inequalities associated with fractional Laplacians on metric measure spaces. The main tool is the theory of heat semigroup based Besov classes in Dirichlet spaces that was introduced by the authors in previous works.