The starshapedness number and a Krasnosel'skij-type theorem in a convexity space
In the context of a convexity space an analogue of Krasnoselskij's theorem on compact star sets in \({\mathbb{R}}^ n\) is given. The concept of starshapedness number is introduced and its relations with Carathéodory, Helly, Radon and exchange numbers are investigated.
scientific article; zbMATH DE number 4036601
scientific article