Geometrical and analytical properties of Chebyshev sets in Riemannian manifolds

Autor:	De Lima, Ronaldo Freire
Zdroj:	Proceedings of the American Mathematical Society, 2016 Apr 01. 144(4), 1697-1710.
Databáze:	JSTOR Journals
Externí odkaz:	https://www.jstor.org/stable/procamermathsoci.144.4.1697 Zobrazit plný text záznamu