数学物理学报(英文版) ›› 1990, Vol. 10 ›› Issue (3): 303-310.
Ryszard Grzaslewicz
Ryszard Grzastewicz
摘要： Let L(E) be a space of operators on a finite dimensional Hilbert space E, and let L(E)* be its dual In this paper the positive part F is considered for the unit ball of L(E)*. We investigate the structure of extremal subsets of F. In particular it is given a characterization of extreme positive functionals on L(E).