Determining dimension of the kernel of a cone
Combinatorial conditions of Krasnosel'skij-type involving concepts of \(R\)-visibility and clear \(R\)-visibility are given to ensure that the dimension of the \(R\)-kernel of a proper subset of \(\mathbb{R}^ d\) is greater than or equal to \(k\), \(0\leq k<d\).
scientific article; zbMATH DE number 164912