A class of extremal positive maps in \(3\times 3\) matrix algebras
Summary: We shall provide a large class of extremal positive maps in \(M_ 3(\mathbb{C})\) which are neither 2-positive nor 2-copositive and study the algebraic structure of the set of all positive linear maps in \(M_ 3(\mathbb{C})\).
scientific article; zbMATH DE number 597472