Extreme Positive Linear Maps on C*-Algebras.
Cho-Ho Chu (1988)
Mathematische Zeitschrift
Similarity:
Cho-Ho Chu (1988)
Mathematische Zeitschrift
Similarity:
Jürgen Bliedtner, Wolfhard Hansen (1976)
Mathematische Zeitschrift
Similarity:
Jaroslaw A. Wisniewski (1988/89)
Mathematische Zeitschrift
Similarity:
Paul Ressel, Jens P.R. Christensen (1982)
Mathematische Zeitschrift
Similarity:
Ryszard Grzaslewicz (1986)
Mathematische Zeitschrift
Similarity:
Mario Bonk (1992)
Mathematische Zeitschrift
Similarity:
W.R. Scott (1956/57)
Mathematische Zeitschrift
Similarity:
John Cossey (1968)
Mathematische Zeitschrift
Similarity:
Marcin Marciniak (2010)
Banach Center Publications
Similarity:
The paper is devoted to the problem of classification of extremal positive linear maps acting between 𝔅(𝒦) and 𝔅(ℋ) where 𝒦 and ℋ are Hilbert spaces. It is shown that every positive map with the property that rank ϕ(P) ≤ 1 for any one-dimensional projection P is a rank 1 preserver. This allows us to characterize all decomposable extremal maps as those which satisfy the above condition. Further, we prove that every extremal positive map which is 2-positive turns out to be automatically...
David Ellis (1953/54)
Mathematische Zeitschrift
Similarity:
Theodore S. Motzkin (1955/56)
Mathematische Zeitschrift
Similarity:
B.H. Neumann (1958)
Mathematische Zeitschrift
Similarity:
Carlo Cecchini (1999)
Studia Mathematica
Similarity:
The topology and the structure of the set of the canonical extensions of positive, weakly continuous functionals from a von Neumann subalgebra to a von Neumann algebra M are described.
William L. Paschke (1978)
Mathematische Zeitschrift
Similarity: