Calculus of Variations and Geometric Measure Theory
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F. Santambrogio

Absolute continuity and summability of transport densities: simpler proofs and new estimates

created by santambro on 12 Sep 2008
modified on 17 Feb 2009


Accepted Paper

Inserted: 12 sep 2008
Last Updated: 17 feb 2009

Journal: Calc. Var. Par. Diff. Eq.
Year: 2009

In november I gave a talk in Pisa about this paper and when I said "the proof by De Pascale and Pratelli has this problem only: it is LONG", most of the people understood "WRONG". I'm very sorry, it was not what I meant. You can trust Gigi and Aldo, their proof works very well !!


The paper presents some short proofs for transport density absolute continuity and $L^p$ estimates. Most of the previously existing results which were proven by geometric arguments are re-proved through a strategy based on displacement interpolation and on approximation by discrete measures; some of them are partially extended.

Keywords: Transport density, displacement interpolation


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