Results 21 to 30 of about 1,777 (237)

Counterfactual entanglement and nonlocal correlations in separable states [PDF]

open access: yes, 1999
It is shown that the outcomes of measurements on systems in separable mixed states can be partitioned, via subsequent measurements on a disentangled extraneous system, into subensembles that display the statistics of entangled states.
A. Peres   +25 more
core   +2 more sources

Equilibrium states on right LCM semigroup C*-algebras

open access: yes, 2017
We determine the structure of equilibrium states for a natural dynamics on the boundary quotient diagram of $C^*$-algebras for a large class of right LCM semigroups.
Afsar, Zahra   +3 more
core   +1 more source

Geometrical approach to mutually unbiased bases

open access: yes, 2007
We propose a unifying phase-space approach to the construction of mutually unbiased bases for a two-qubit system. It is based on an explicit classification of the geometrical structures compatible with the notion of unbiasedness. These consist of bundles
Andrei B Klimov   +14 more
core   +1 more source

Factorizations of matrices over semirings

open access: yesLinear Algebra and its Applications, 2003
A semiring \(R\) with identity satisfies all ring axioms but one: an additive inverse of an element in \(R\) is not required. All matrices below have entries in \(R\). The semiring rank of a matrix \(A\) is the smallest \(r\) such that \(A=BC\), where \(B\) is an \(n\times r\) matrix and \(C\) is an \(r\times n\) matrix.
Hyuk Cho, Han, Kim, Suh-Ryung
openaire   +1 more source

Mapping the evolution of mitochondrial complex I through structural variation

open access: yesFEBS Letters, EarlyView.
Respiratory complex I (CI) is crucial for bioenergetic metabolism in many prokaryotes and eukaryotes. It is composed of a conserved set of core subunits and additional accessory subunits that vary depending on the organism. Here, we categorize CI subunits from available structures to map the evolution of CI across eukaryotes. Respiratory complex I (CI)
Dong‐Woo Shin   +2 more
wiley   +1 more source

No-cloning theorem in thermofield dynamics

open access: yes, 2012
We discuss the relation between the no-cloning theorem from quantum information and the doubling procedure used in the formalism of thermofield dynamics (TFD).
Gottesman D.   +8 more
core   +1 more source

Organoids in pediatric cancer research

open access: yesFEBS Letters, EarlyView.
Organoid technology has revolutionized cancer research, yet its application in pediatric oncology remains limited. Recent advances have enabled the development of pediatric tumor organoids, offering new insights into disease biology, treatment response, and interactions with the tumor microenvironment.
Carla Ríos Arceo, Jarno Drost
wiley   +1 more source

Factorization of matrices of quaternions

open access: yesExpositiones Mathematicae, 2012
We review known factorization results in quaternion matrices. Specifically, we derive the Jordan canonical form, polar decomposition, singular value decomposition, the QR factorization. We prove there is a Schur factorization for commuting matrices, and from this derive the spectral theorem.
openaire   +2 more sources

Factorization of nonnegative matrices—II

open access: yesLinear Algebra and its Applications, 1978
AbstractSuppose A is an n×n nonnegative matrix. Necessary and sufficient conditions are given for A to be factored as LU, where L is a lower triangular nonnegative matrix, and U is an upper triangular nonnegative matrix with uii = 1.
Lau, Cony M., Markham, Thomas L.
openaire   +2 more sources

Reciprocal control of viral infection and phosphoinositide dynamics

open access: yesFEBS Letters, EarlyView.
Phosphoinositides, although scarce, regulate key cellular processes, including membrane dynamics and signaling. Viruses exploit these lipids to support their entry, replication, assembly, and egress. The central role of phosphoinositides in infection highlights phosphoinositide metabolism as a promising antiviral target.
Marie Déborah Bancilhon, Bruno Mesmin
wiley   +1 more source

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