Results 31 to 40 of about 231,003 (300)

Generators of semigroups of completely positive maps [PDF]

open access: yes, 1978
Any generator of a norm continuous semigroup of completely positive normal maps on a von Neumann algebra M can be decomposed into a sum of a completely positive map and a map of the form m→x*m+mx.
Christensen, Erik
core   +1 more source

Completely positive maps and classical correlations [PDF]

open access: yesJournal of Physics A: Mathematical and Theoretical, 2008
We expand the set of initial states of a system and its environment that are known to guarantee completely positive reduced dynamics for the system when the combined state evolves unitarily. We characterize the correlations in the initial state in terms of its quantum discord [H. Ollivier and W. H. Zurek, Phys. Rev. Lett. 88, 017901 (2001)].
Rodríguez-Rosario, César A.   +4 more
openaire   +2 more sources

When do pieces determine the whole? Extreme marginals of a completely positive map [PDF]

open access: yes, 2022
We will consider completely positive maps defined on tensor products of von Neumann algebras and taking values in the algebra of bounded operators on a Hilbert space and particularly certain convex subsets of the set of such maps.
Haapasalo E.   +2 more
core   +1 more source

Completely positive module maps and completely positive extreme maps [PDF]

open access: yesProceedings of the American Mathematical Society, 1996
Let A , B A,B
openaire   +2 more sources

The Curvature and Index of Completely Positive Maps [PDF]

open access: yesProceedings of the London Mathematical Society, 2003
We study conjugacy invariants for completely positive maps that are inspired by the concept of curvature introduced for commuting d-tuples of contractions by ...
Muhly, Paul S., Solel, Baruch
openaire   +3 more sources

Bi-Free Entropy with Respect to Completely Positive Maps [PDF]

open access: yes, 2021
In this paper, a notion of non-microstate bi-free entropy with respect to completely positive maps is constructed thereby extending the notions of non-microstate bi-free entropy and free entropy with respect to a completely positive map. By extending the
Skoufranis, Paul, Katsimpas, Georgios
core   +2 more sources

MAPPING FROM SPACE – ONTOLOGY BASED MAP PRODUCTION USING SATELLITE IMAGERIES [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2013
Determination of the maximum ability for feature extraction from satellite imageries based on ontology procedure using cartographic feature determination is the main objective of this research.
A. Asefpour Vakilian, M. Momeni
doaj   +3 more sources

Infinite dimensional generalizations of Choi’s Theorem

open access: yesSpecial Matrices, 2019
In this paper we give a simple sequence of necessary and sufficient finite dimensional conditions for a positive map between certain subspaces of bounded linear operators on separable Hilbert spaces to be completely positive. These criterions are natural
Friedland Shmuel
doaj   +1 more source

A completely positive map associated with a positive map [PDF]

open access: yesPacific Journal of Mathematics, 2011
We show that each positive map from B(K) to B(H) with K and H finite dimensional Hilbert spaces is a scalar multiple of a map of the form $Tr - ψ$ with $ψ$ completely positive. This is used to give necessary and sufficient conditions for maps to be C-positive for a large class of mapping cones; in particular we apply the results to k-positive maps.
openaire   +2 more sources

Completely positive linear maps on complex matrices [PDF]

open access: yes, 1975
A linear map Φ from Mn to Mm is completely positive iff it admits an expression Φ(A)=ΣiV∗iAVi where Vi are n×m ...
Choi, Man-Duen
core   +1 more source

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