Results 51 to 60 of about 438,174 (168)
Positive linear maps on operator algebras [PDF]
Communications in Mathematical Physics, 1976 Given a family of completely positive maps, indexed by a group, from aC*-algebra into itself, we are concerned with its dilation to a group of *-automorphisms on a larger algebra. A Schwarz-type inequality forn-positive *-linear mappings from an involutive algebra into the bounded linear operators on a hilbert space is obtained. Strongly continuous one-
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Positive linear maps and spreads of matrices-II
Linear Algebra and its Applications, 2016 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Bhatia, Rajendra, Sharma, Rajesh
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On Partially Trace Distance Preserving Maps and Reversible Quantum Channels
Journal of Applied Mathematics, 2013 We give a characterization of trace-preserving and positive linear maps preserving trace distance partially, that is, preservers of trace distance of quantum states or pure states rather than all matrices.
Long Jian, Kan He, Qing Yuan, Fei Wang
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Positivity of linear maps under tensor powers [PDF]
Journal of Mathematical Physics, 2015 We investigate linear maps between matrix algebras that remain positive under tensor powers, i.e., under tensoring with n copies of themselves. Completely positive and completely co-positive maps are trivial examples of this kind. We show that for every n ∈ ℕ, there exist non-trivial maps with this property and that for two-dimensional Hilbert spaces ...
Müller-Hermes, Alexander +2 more
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Atomic Positive Linear Maps in Matrix Algebras
Publications of the Research Institute for Mathematical Sciences, 1998 We show that all of the known generalizations of the Choi maps are atomic maps.
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Positive linear maps and perturbation bounds of matrices
Linear Algebra and its Applications, 2017 We show how positive unital linear maps can be used to obtain lower bounds for the maximum distance between the eigenvalues of two normal matrices. Some related bounds for the spread and condition number of Hermitian matrices are also discussed here.
Sharma, R., Kumari, R.
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A Robust Image Encryption Algorithm Based on a 32-bit Chaotic System
IEEE Access, 2020 In these years, image encryption systems based on chaotic maps have received considerable attention from researchers. For the security of encryption algorithms, it is important to ensure that chaotic systems can produce high quality pseudo-random ...
Hao Li, Lianbing Deng, Zhaoquan Gu
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Extensions of Kadison’s inequality on positive linear maps
Linear Algebra and its Applications, 2012 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Yuan, Jiangtao, Ji, Guoxing
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Distinguishing between statistical and systematic errors in quantum process tomography
New Journal of Physics, 2019 It is generally assumed that every process in quantum physics can be described mathematically by a completely positive map. However, experimentally reconstructed processes are not necessarily completely positive due to statistical or systematic errors ...
Sabine Wölk +3 more
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Assessment of Deposited Red Clay Soil in Kirkuk City Using Remote Sensing Data and GIS Techniques [PDF]
Nature Environment and Pollution TechnologyThis study investigates the physical characteristics of red clay using the IDW approach and linear regression modeling in an area of 268.12 km2, focusing on Kirkuk, Bor, and Jambor structures.
V. F. Salahalden, M. A. Shareef and Q. A. M. Al Nuaimy
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