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Stability of the Steiner symmetrization of convex sets

Marco Barchiesi, Filippo Cagnetti, Nicola Fusco (2013)

Journal of the European Mathematical Society

The isoperimetric inequality for Steiner symmetrization of any codimension is investigated and the equality cases are characterized. Moreover, a quantitative version of this inequality is proven for convex sets.

Sur la régularité du profil isopérimétrique des surfaces riemanniennes compactes

Pierre Pansu (1998)

Annales de l'institut Fourier

On montre que, sur une surface riemannienne compacte, le profil isopérimétrique admet un développement limité à l’ordre 3 en 0 . Lorsque la métrique est analytique, le profil est semi-analytique. Il existe des métriques lisses sur la 2 -sphère dont le profil n’est pas de classe C 1 au voisinage de 0 .

Synchronized traffic plans and stability of optima

Marc Bernot, Alessio Figalli (2008)

ESAIM: Control, Optimisation and Calculus of Variations

The irrigation problem is the problem of finding an efficient way to transport a measure μ+ onto a measure μ-. By efficient, we mean that a structure that achieves the transport (which, following [Bernot, Caselles and Morel, Publ. Mat.49 (2005) 417–451], we call traffic plan) is better if it carries the mass in a grouped way rather than in a separate way. This is formalized by considering costs functionals that favorize this property. The aim of this paper is to introduce a dynamical cost functional...

The BV-energy of maps into a manifold : relaxation and density results

Mariano Giaquinta, Domenico Mucci (2006)

Annali della Scuola Normale Superiore di Pisa - Classe di Scienze

Let  𝒴   be a smooth compact oriented riemannian manifoldwithout boundary, and assume that its 1 -homology group has notorsion. Weak limits of graphs of smooth maps  u k : B n 𝒴   with equibounded total variation give riseto equivalence classes of cartesian currents in  cart 1 , 1 ( B n 𝒴 )   for which we introduce a natural B V -energy.Assume moreover that the first homotopy group of   𝒴   iscommutative. In any dimension   n   we prove that every element  T   in   cart 1 , 1 ( B n 𝒴 )   can be approximatedweakly in the sense of currents by a sequence of graphs...

The Curvature of a Set with Finite Area

Elisabetta Barozzi (1994)

Atti della Accademia Nazionale dei Lincei. Classe di Scienze Fisiche, Matematiche e Naturali. Rendiconti Lincei. Matematica e Applicazioni

In a paper, by myself, E. Gonzalez and I. Tamanini (see [2]), it was proven that all sets of finite perimeter do have a non trivial variational property, connected with the mean curvature of their boundaries. In the present article, that variational property is made more precise.

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