PUBLICATIONS DE L'INSTITUT MATHÉMATIQUE (BEOGRAD) (N.S.) Vol. 29(43), pp. 283288 (1981) 

A NOTE ON STARSHAPED SETSSinisa Vre\'cicaMatematicki fakultet, Beograd, YugoslaviaAbstract: We find the smallest Lipschitz constant for the radial projection of the unit sphere on the boundary of a compact starshaped set containing the origin in the interior of its convex kernel. We also find the least upper bound of the upper outer surface area in the sense of Minkowski of the boundary of a compact starshaped set contained in the unit ball and containing a concentric ball of radius a $(0Keywords: the smallest Lipschitz constant, the upper outer surface area in the sense of Minkowski Classification (MSC2000): 52A30 Full text of the article:
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© 2001 Mathematical Institute of the Serbian Academy of Science and Arts
