Abstract
We prove an integral representation formula for the relaxed functional of a scalar non parametric integral of the Calculus of Variations. Similar results are known to be true under the key assumption that the integrand is coercive in the gradient variable. Here we show that the same integral representation holds for a wide class of non coercive integrands, including for example the strictly convex ones.
References
- G. Anzellotti, G. Buttazzo, G. Dal Maso: Dirichlet problem for demi-coercive functionals, Nonlinear Anal. 10 (1986) 603–613.https://doi.org/10.1016/0362-546X(86)90145-8Google Scholar
- J. P. Aubin, H. Frankowska: Set Valued Analysis, Birkhäuser, Basel (1990).Google Scholar
- G. Bouchitté, G. Dal Maso: Integral representation and relaxation of convex local functionals on BV (Ω), Ann. Scuola Norm. Sup. Pisa Cl. Sci., IV. Ser. 20(4) (1993) 483–533.Google Scholar
- A. Braides, V. De Cicco: New lower semicontinuity and relaxation results for functionals defined on BV (Ω), Adv. Math. Sci. Appl. 6 (1996) 1–30.Google Scholar
- G. Buttazzo: Semicontinuity, Relaxation and Integral Representation in the Calculus of Variations, Pitman Res. Notes Math. Ser. 207, Longman, Harlow (1989).Google Scholar
- G. Dal Maso: Integral representation on BV (Ω) of Γ-limits of variational integrals, Manuscripta Math. 30 (1980) 387–416.https://doi.org/10.1007/BF01301259Google Scholar
- V. De Cicco: A lower semicontinuity result for functionals defined on BV (Ω), Ricerche Mat. 39 (1990) 293–325.Google Scholar
- V. De Cicco: Lower semicontinuity for certain integral functionals on BV (Ω), Bull. Un. Mat. Ital. 5-B (1991) 291–313.Google Scholar
- F. Ferro: Integral characterization of functionals defined on spaces of BV functions, Rend. Sem. Mat. Univ. Padova 61 (1979) 177–201.Google Scholar
- I. Fonseca, S. Müller: Relaxation of quasiconvex functionals in BV (Ω, Rp) for integrands f (x, u, ∇u), Arch. Rat. Mech. Anal. 123 (1993) 1–49.https://doi.org/10.1007/BF00386367Google Scholar
- I. Fonseca, G. Leoni: On lower semicontinuity and relaxation, Proc. Roy. Soc. Edinburgh 131A (2001) 519–565.https://doi.org/10.1017/S0308210501000245Google Scholar
- M. Giaquinta, G. Modica, J. Souček: Functionals with linear growth in the calculus of variations. I., Comm. Math. Univ. Carolinae 20 (1979) 143–156.Google Scholar
- C. Goffman, J. Serrin: Sublinear functions of measures and variational integrals, Duke Math. J. 31 (1964) 159–178.https://doi.org/10.1215/S0012-7094-64-03115-1Google Scholar
- M. Gori, F. Maggi: The common root of the geometric conditions in Serrin lower semicontinuity theorem, preprint.Google Scholar
- M. Gori, F. Maggi, P. Marcellini: On some sharp lower semicontinuity condition in L1, Preprint Univ. di Firenze (2002).Google Scholar
- C. B. Morrey Jr.: Multiple Integrals in the Calculus of Variations, Die Grundlehren der mathematischen Wissenschaften 130, Springer-Verlag, New York (1966).https://doi.org/10.1007/978-3-540-69952-1Google Scholar
- Yu. G. Reshetnyak: Weak convergence of completely additive vector functions on a set, Siberian Math. J. 9 (1968) 1039–1045.https://doi.org/10.1007/BF02196453Google Scholar
- R. T. Rockafellar: Convex Analysis, Princeton Mathematical Series 28, Princeton University Press, Princeton, New Jersey (1970).Google Scholar
- J. Serrin: On the definition and properties of certain variational integrals, Trans. Amer. Math. Soc. 101 (1961) 139–167.https://doi.org/10.1090/S0002-9947-1961-0138018-9Google Scholar
Suggested citation
Published by Heldermann Verlag, 2003. Rights now held by Banach Press LLC.
