ON A DEGENERATE PROBLEM IN THE CALCULUS OF VARIATIONS

Guy Bouchitté (1, 2) , Pierre Bousquet (3)

1 IMATH - Institut de Mathématiques de Toulon - EA 2134
2 ANLA - Laboratoire d'Analyse Non Linéaire Appliquée
3 IMT - Institut de Mathématiques de Toulouse UMR5219

We establish the uniqueness of the solutions for a degenerate scalar problem in the multiple integrals calculus of variations. The proof requires as a preliminary step the study of the regularity properties of the solutions and of their level sets. We exploit the uniqueness and the regularity results to explore some of their qualitative properties. In particular, we emphasize the link between the supports of the solutions and the Cheeger problem.

Domaines: Equations aux dérivées partielles [math.AP]

Guy Bouchitté, Pierre Bousquet. ON A DEGENERATE PROBLEM IN THE CALCULUS OF VARIATIONS. Transactions of the American Mathematical Society, inPress. ⟨hal-01405468v2⟩