Über die endliche Lösbarkeit des Plateau-Problems in Riemannschen Mannigfaltigkeiten.
Über die Stetigkeit teilweise freier Minimalflächen.
Über eine Verallgemeinerung des Plateauschen Problems.
Un algorithme d'identification de frontières soumises à des conditions aux limites de Signorini
Un algorithme d'identification de frontières soumises à des conditions aux limites de Signorini
This work deals with a non linear inverse problem of reconstructing an unknown boundary γ, the boundary conditions prescribed on γ being of Signorini type, by using boundary measurements. The problem is turned into an optimal shape design one, by constructing a Kohn & Vogelius-like cost function, the only minimum of which is proved to be the unknown boundary. Furthermore, we prove that the derivative of this cost function with respect to a direction θ depends only on the state u0, and not...
Un principio di Massimo Forte per le frontiere minimali e una sua applicazione alla risoluzione del problema al contorno per l'equazione delle superfici di area minima
Un résultat d'existence en optimisation de forme en utilisant une propriété géométrique de la normale
Un résultat d'existence en optimisation de forme en utilisant une propriété géométrique de la normale
Dans cet article nous prouvons un nouveau résultat d'existence pour une classe de problèmes d'optimisation de forme assez générale. Les ouverts que nous considérons possèdent une contrainte de nature géométrique sur la normale intérieure. Ce travail est motivé par la formulation variationnelle d'un problème à frontière libre dont la solution possède cette propriété géométrique.
Un teorema sulle correnti intere a supporto non compatto
Unduloids and their geometry
In this paper we consider non-compact cylinder-like surfaces called unduloids and study some aspects of their geometry. In particular, making use of a Kenmotsu-type representation of these surfaces, we derive explicit formulas for the lengths and areas of arbitrary segments, along with a formula for the volumes enclosed by them.
Une deuxième surface à courbure moyenne prescrite s'appuyant sur une courbe donnée
Uniform rectifiability and singular sets
Uniqueness and approximate computation of optimal incomplete transportation plans
For α∈(0, 1) an α-trimming, P∗, of a probability P is a new probability obtained by re-weighting the probability of any Borel set, B, according to a positive weight function, f≤1/(1−α), in the way P∗(B)=∫Bf(x)P(dx). If P, Q are probability measures on euclidean space, we consider the problem of obtaining the best L2-Wasserstein approximation between: (a) a fixed probability and trimmed versions of the other; (b) trimmed versions of both probabilities. These best trimmed approximations naturally...
Uniqueness results for operators in the variational sequence
We prove that the most interesting operators in the Euler-Lagrange complex from the variational bicomplex in infinite order jet spaces are determined up to multiplicative constant by the naturality requirement, provided the fibres of fibred manifolds have sufficiently large dimension. This result clarifies several important phenomena of the variational calculus on fibred manifolds.
Unstable Solutions of the Euler Equations of Certain Variational Problems.