Abstract.
We study the maximization problem, among all subsets X of a given domain \(\Omega\), of the quotient of the integral in X of a given function f by the integral on the boundary of X of another function g. This is a generalization of the well-known Cheeger problem corresponding to constant functions f,g. The non-constant case is motivated by applications to landslides modeling where the the supremum given by a variational blocking problem appears as a safety coefficient. We prove that this coefficient is equal to the supremum of the shape optimization problem formerly mentioned. For constant data, this amounts to studying the first eigenvalue of the 1-laplacian operator.
We prove existence of optimal sets, and give some differential characterization of their internal boundary. We study their symmetry properties using the Steiner symmetrization. In dimension two, we give explicit solutions for data depending only on one variable.
Résumé.
Nous étudions le probléme de maximisation, parmi les ensembles X inclus dans un domaine fixé \(\Omega\), du quotient de l’intégrale d’une fonction donnée f dans X par l’intégrale d’une autre fonction g sur le bord de X. Il s’agit donc d’une généralisation du célébre probléme de Cheeger (correspondant au cas f, g, constants). Le cas non-constant est motivé par des applications aux glissements de terrain, oú le supremum donné par un probléme variationnel de blocage, apparaít comme un coefficient de sreté. Nous démontrons que ce coefficient est égal á l’optimum du probléme d’optimisation de formes mentionné précédemment. Dans le cas de données constantes, cela revient á étudier la premiére valeur propre de l’opérateur 1-laplacien.
Nous démontrons l’existence d’ensembles optimaux, et donnons une caractérisation différentielle de leur bord intérieur. Nous étudions leur symétrie á l’aide de la symétrisation de Steiner. En dimension deux, nous exhibons des solutions explicites dans le cas oú les données ne dépendent que d’une variable.
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References
Ambrosio, L., Buttazzo, G.: An optimal design problem with perimeter penalization. Calc. Var. 1, 55-69 (1993)
Bucur, D., Zolésio, J.-P.: Boundary optimization under pseudo curvature constraint. Ann. Scuola Norm. Sup. Pisa (4) 23, 681-699 (1996)
Buser, P.: A note on the isoperimetric constant. Ann. Sci. École Norm. Sup. (4) 15, 213-230 (1982)
Cazacu, O., Cristescu, N.: Constitutive model and analysis of creep flow of natural slopes. Italian Geotechnical Journal 34, 44-54 (2000)
Cheeger, J.: A lower bound for the smallest eigenvalue of the Laplacian. In: Gunning, R.C. (ed.) Problems in Analysis, A Symposium in Honor of Salomon Bochner, pp. 195-199. Princeton Univ. Press 1970
Cristescu, N., Cazacu, O., Cristescu, C.: A model for landslides. Canadian Geotechnical Journal 39, 924-937 (2002)
Demengel, F.: On some nonlinear equation involving the 1-Laplacian and trace map inequalities. Nonlinear Anal., Theory Methods Appl. 48A 8, 1151-1163 (2002)
Demengel, F.: Théorémes d’existence pour des équations avec l’opérateur “1-Laplacien”, premiére valeur propre pour \(-\Delta_1\): Some existence results for partial differential equations involving the 1-Laplacian: Eigenvalues for \(-\Delta_1\). Comptes Rendus Mathématiques 334, 1071-1076 (2002)
Evans, L.C., Gariepy, R.F.: Measure theory and fine properties of functions. CRC Press Inc. 1992
Hassani, R., Ionescu, I., Lachand-Robert, T.: Shape optimization and supremal minimization approaches in landslides modelling, submitted
Henrot A., Pierre M.: Optimisation de forme. (In preparation)
Hild P., Ionescu I.R., Lachand-Robert T., Rosca I.: The blocking of an inhomogeneous Bingham fluid. Applications to landslides. M2AN 36, 1013-1026 (2002)
Kawohl, B.: Rearrangements and convexity of level sets in PDE. Lectures Notes in Math. 1150. New York, Springer 1985
Kawohl, B.: On a family of torsional creep problems. J. reine angew. Math. 410, 1-22 (1990)
Kawohl, B., Fridman, V.: Isoperimetric estimates for the first eigenvalue of the p-Laplace operator and the Cheeger constant. Comm. Mat. Univ. Carol. (to appear)
Matei, A.-M.: First eigenvalue for the p-Laplace operator. Nonlinear Anal., Theory Methods Appl. 39A, 1051-1068 (2000)
Simon, J.: Differential with respect to the domain in boundary value problems. Num. Funct. Anal. Optimz 2, 649-687 (1980)
Vol’pert, A.I.: Spaces BV and quasi-linear equations. Math. USSR Sb. 17, 225-267 (1967)
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Received: 18 June 2004, Accepted: 12 July 2004, Published online: 10 December 2004
Mathematics Subject Classification (2000):
49J40, 49Q10
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Ionescu, I.R., Lachand-Robert, T. Generalized Cheeger sets related to landslides. Calc. Var. 23, 227–249 (2005). https://doi.org/10.1007/s00526-004-0300-y
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DOI: https://doi.org/10.1007/s00526-004-0300-y