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On the Minimal Convex Shell of a Convex Body

Published online by Cambridge University Press:  20 November 2018

Carla Peri*
Affiliation:
Istituto di Matematica Università Cattolica del Sacro Cuore Largo Gemelli, 1 20123 Milano Italy
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Abstract

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For any convex body C in ℝd we introduce the notion of the convex shell and we prove that there exists a unique "minimal" convex shell, extending the notion of the minimal spherical shell of C. Then we prove that a "typical" convex body touches the boundary of its minimal convex shell in precisely d + 2 points.

Type
Research Article
Copyright
Copyright © Canadian Mathematical Society 1993

References

[1] Bäräny, I., On the minimal ring containing the boundary of a convex body, Acta Sci. Math., Szeged 52(1988), 93100.Google Scholar
[2] Bonnesen, T., Les probèmes des isopérimètres et des isépiphanes, Gauthier-Villars, Paris, 1929.Google Scholar
[3] Joffe, A. D. and Tichomirov, V. M., Teorija ÈkstremaVnych zadac, Nauka, Moskva, 1974.Google Scholar
[4] Gruber, P. M., Baire categories in convexity. In: Handbook of Convex Geometry, North-Holland, Amsterdam, to appear.Google Scholar
[4a] Heil, E., WievielAffinnormalengehendurcheinenPunkt?, Proc. Congress Geometry, Thessaloniki, (1992), 5466.Google Scholar
[5] Kritikos, N., Uber Konvexe Flàchen und einschliessende Kugeln, Math. Ann. 96(1927), 583586.Google Scholar
[6] Peri, C. and Zucco, A., On the minimal convex annulus of a planar convex body, Ma. Math. 114(1992), 125133.Google Scholar
[7] Rockafellar, T. R., Convex Analysis, Princeton, 1970.Google Scholar
[8] Zamfirescu, T., Baire categories in convexity, Atti. Sem. Mat. Fis. Univ. Modena XXXIX (1991), 139164.Google Scholar
[9] Zucco, A., Minimal shell of a typical convex body, Proc. Amer. Math. Soc. 109(1990), 797802.Google Scholar