Dans cet article nous étudions le problème d’optimisation de forme : trouver le domaine plan d’aire minimale parmi les convexes de largeur constante et d’inradius donnés. Dans la littérature, ce problème est attribué à Bonnesen qui a proposé une conjecture pour le domaine optimal. Nous donnons ici une réponse complète à ce problème en décrivant les domaines optimaux pour tout choix de la largeur et de l’inradius. Ces domaines sont des polygones de Reuleaux particuliers.
In this paper we address the following shape optimization problem: find the planar domain of least area, among the sets with prescribed constant width and inradius. In the literature, the problem is ascribed to Bonnesen, who proposed it in [3]. In the present work, we give a complete answer to the problem, providing an explicit characterization of optimal sets for every choice of width and inradius. These optimal sets are particular Reuleaux polygons.
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DOI : 10.5802/jep.150
Keywords: Area minimization, constant width, inradius constraint, Reuleaux polygons
Mot clés : Minimisation de l’aire, largeur constante, contrainte d’inradius, polygones de Reuleaux
@article{JEP_2021__8__415_0, author = {Henrot, Antoine and Lucardesi, Ilaria}, title = {Body of constant width with minimal area in a given annulus}, journal = {Journal de l{\textquoteright}\'Ecole polytechnique {\textemdash} Math\'ematiques}, pages = {415--438}, publisher = {Ecole polytechnique}, volume = {8}, year = {2021}, doi = {10.5802/jep.150}, mrnumber = {4218163}, language = {en}, url = {http://www.numdam.org/articles/10.5802/jep.150/} }
TY - JOUR AU - Henrot, Antoine AU - Lucardesi, Ilaria TI - Body of constant width with minimal area in a given annulus JO - Journal de l’École polytechnique — Mathématiques PY - 2021 SP - 415 EP - 438 VL - 8 PB - Ecole polytechnique UR - http://www.numdam.org/articles/10.5802/jep.150/ DO - 10.5802/jep.150 LA - en ID - JEP_2021__8__415_0 ER -
%0 Journal Article %A Henrot, Antoine %A Lucardesi, Ilaria %T Body of constant width with minimal area in a given annulus %J Journal de l’École polytechnique — Mathématiques %D 2021 %P 415-438 %V 8 %I Ecole polytechnique %U http://www.numdam.org/articles/10.5802/jep.150/ %R 10.5802/jep.150 %G en %F JEP_2021__8__415_0
Henrot, Antoine; Lucardesi, Ilaria. Body of constant width with minimal area in a given annulus. Journal de l’École polytechnique — Mathématiques, Tome 8 (2021), pp. 415-438. doi : 10.5802/jep.150. http://www.numdam.org/articles/10.5802/jep.150/
[1] Minimum area of a set of constant width, Proc. Sympos. Pure Math., Vol. VII, American Mathematical Society, Providence, RI, 1963, pp. 13-14 | DOI | Zbl
[2] Konvexe Bereiche gegebener konstanter Breite und kleinsten Inhalts, Math. Ann., Volume 76 (1915) no. 4, pp. 504-513 | DOI | MR | Zbl
[3] Theorie der konvexen Körper, Berichtigter Reprint, Springer-Verlag, Berlin-New York, 1974 (English transl.: Theory of convex bodies, BCS Associates, Moscow, ID, 1987) | DOI | Zbl
[4] Über Flächen von fester Breite, Jahresber. Deutsch. Math.-Verein., Volume 46 (1936), pp. 96-139 | Zbl
[5] Minimum problems for volumes of convex bodies, Partial differential equations and applications (Lecture Notes in Pure and Appl. Math.), Volume 177, Dekker, New York, 1996, pp. 43-55 | MR | Zbl
[6] Convex bodies of constant width, Convexity and its applications, Birkhäuser, Basel, 1983, pp. 49-96 | DOI | Zbl
[7] A proof of Blaschke’s theorem on the Reuleaux triangle, Quart. J. Math. Oxford Ser. (2), Volume 3 (1952), pp. 296-297 | DOI | MR | Zbl
[8] An optimal control formulation of the Blaschke-Lebesgue theorem, J. Math. Anal. Appl., Volume 200 (1996) no. 2, pp. 322-331 | DOI | MR | Zbl
[9] A direct proof of a theorem of Blaschke and Lebesgue, J. Geom. Anal., Volume 12 (2002) no. 1, pp. 81-88 | DOI | MR | Zbl
[10] Extremum problems for eigenvalues of elliptic operators, Frontiers in Mathematics, Birkhäuser Verlag, Basel, 2006 | Zbl
[11] A Blaschke-Lebesgue theorem for the Cheeger constant, 2020 | arXiv
[12] Variation et optimisation de formes. Une analyse géométrique, Mathématiques & Applications, 48, Springer, Berlin, 2005 | DOI | Zbl
[13] On the isoperimetric inequalities for Reuleaux polygons, J. Geom., Volume 68 (2000) no. 1-2, pp. 171-191 | DOI | MR | Zbl
[14] Sur le problème des isopérimètres et sur les domaines de largeur constante, Bull. Soc. Math. France C.R., Volume 7 (1914), pp. 72-76
[15] Bodies of constant width. An introduction to convex geometry with applications, Birkhäuser/Springer, Cham, 2019 | DOI | Zbl
[16] Über Gleichdicke kleinsten Flächeninhalts, Anzeiger Wien, Volume 71 (1934), p. 4 | Zbl
[17] Der Inhalt der Gleichdicke, Math. Ann., Volume 110 (1935) no. 1, pp. 97-127 | DOI | MR | Zbl
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