JournalsprimsVol. 28 , No. 5DOI 10.2977/prims/1195167934

A Class of Extremal Positive Maps in 3 x 3 Matrix Algebras

  • Hiroyuki Osaka

    Tokyo Metropolitan University, Japan
A Class of Extremal Positive Maps in 3 x 3 Matrix Algebras cover

Abstract

We shall provide a large class of extremal positive maps in _M_3(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(C).