Comptes Rendus
Théorie du contrôle
Some Regularity Properties on Bolza problems in the Calculus of Variations
Comptes Rendus. Mathématique, Volume 360 (2022), pp. 205-218.

The paper summarizes the main core of the last results that we obtained in [8, 4, 17] on the regularity of the value function for a Bolza problem of a one-dimensional, vectorial problem of the calculus of variations. We are concerned with a nonautonomous Lagrangian that is possibly highly discontinuous in the state and velocity variables, nonconvex in the velocity variable and non coercive. The main results are achieved under the assumption that the Lagrangian is convex on the one-dimensional lines of the velocity variable and satisfies a local Lipschitz continuity condition w.r.t. the time variable, known in the literature as Property (S), and strictly related to the validity of the Erdmann–Du-Bois Reymond equation.

Under our assumptions, there exists a minimizing sequence of Lipschitz functions. A first consequence is that we can exclude the presence of the Lavrentiev phenomenon. Moreover, under a further mild growth assumption satisfied by the minimal length functional, fully described in the paper, the above sequence may be taken with the same Lipschitz rank, even when the initial datum and initial value vary on a compact set. The Lipschitz regularity of the value function follows.

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DOI : 10.5802/crmath.220
Classification : 49J05, 49J15, 49J30, 49N60

Julien Bernis 1 ; Piernicola Bettiol 1 ; Carlo Mariconda 2

1 Université de Brest, UMR CNRS 6205, Laboratoire de Mathématiques de Bretagne Atlantique, 6 Avenue Victor Le Gorgeu, 29200 Brest, France
2 University of Padua, Dipartimento di Matematica “Tullio Levi-Civita”, Padova 35121, Italy
Licence : CC-BY 4.0
Droits d'auteur : Les auteurs conservent leurs droits
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     title = {Some {Regularity} {Properties} on {Bolza} problems in the {Calculus} of {Variations}},
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Julien Bernis; Piernicola Bettiol; Carlo Mariconda. Some Regularity Properties on Bolza problems in the Calculus of Variations. Comptes Rendus. Mathématique, Volume 360 (2022), pp. 205-218. doi : 10.5802/crmath.220. https://comptes-rendus.academie-sciences.fr/mathematique/articles/10.5802/crmath.220/

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