Results 61 to 70 of about 438,174 (168)
SchWARMA: A model-based approach for time-correlated noise in quantum circuits
Physical Review Research, 2021 Temporal noise correlations are ubiquitous in quantum systems, yet often neglected in the analysis of quantum circuits due to the complexity required to accurately characterize and model them.
Kevin Schultz +3 more
doaj +1 more source
KPI Science News, 2019 Background. The brain perfusion ROI detection being a preliminary step, designed to exclude non-brain tissues from analyzed DSC perfusion MR images. Its accuracy is considered as the key factor for delivering correct results of perfusion data analysis ...
Svitlana M. Alkhimova +1 more
doaj +1 more source
Irreducible positive linear maps on operator algebras [PDF]
Proceedings of the American Mathematical Society, 1996 Motivated by the classical results of G. Frobenius and O. Perron on the spectral theory of square matrices with nonnegative real entries, D. Evans and R. Høegh-Krohn have studied the spectra of positive linear maps on general (noncommutative) matrix algebras.
openaire +1 more source
More operator inequalities for positive linear maps [PDF]
Banach Journal of Mathematical Analysis, 2015 Some operator inequalities for positive linear maps are presented. These inequalities improve and generalize the corresponding results due to Fu and He [Linear Multilinear Algebra, doi: 10.1080/03081087.2014.880432.].
openaire +2 more sources
Ecosphere, 2018 Topographic variables such as slope and elevation partially explain spatial variations in aboveground biomass (AGB) within landscapes. Human activities that impact vegetation, such as cattle grazing and shifting cultivation, often follow topographic ...
Miguel A. Salinas‐Melgoza +2 more
doaj +1 more source
Background independent tensor networks
SciPost PhysicsConventional holographic tensor networks can be described as toy holographic maps constructed from many small linear maps acting in a spatially local way, all connected together with "background entanglement", i.e.
Chris Akers, Annie Y. Wei
doaj +1 more source
Exposed faces for decomposable positive linear maps arising from completely positive maps
, 2011 Let $D$ be a space of $2\times n$ matrices. Then the face of the cone of all completely positive maps from $M_2$ into $M_n$ given by $D$ is an exposed face of the bigger cone of all decomposable positive linear maps if and only if the set of all rank one matrices in $D$ forms a subspace of $D$ together with zero and $D^\perp$ is spanned by rank one ...
Choi, Hyun-Suk, Kye, Seung-Hyeok
openaire +2 more sources
Dimension of the set of positive solutions to nonlinear equations and applications
Electronic Journal of Differential Equations, 2016 We study the covering dimension of the set of (positive) solutions to various classes of nonlinear equations involving condensing and A-proper maps. It is based on the nontriviality of the fixed point index of a certain condensing map or on oddness ...
Petronije S. Milojevic
doaj
Revista Finanzas y Política Económica, 2022 Enterprise risk management is a discipline that is becoming increasingly necessary due to the changing environment in which companies operate. This paper is based on a research question that propose to hypotheses that question the impact of risk ...
Maria Antonia Nuñez +2 more
doaj
Around Choi inequalities for positive linear maps
Linear Algebra and its Applications, 2011 Let \(\Phi\) be a unital positive linear map between two matrix algebras \({\mathcal A}\) and \({\mathcal B}\) and let \(A\in {\mathcal A}\) be positive. \textit{J.-C.\thinspace Bourin} and \textit{E.\,Ricard} [Linear Algebra Appl.\ 433, No.\,3, 499--510 (2010; Zbl 1208.15019)] showed that, if \(0 \leq p \leq q\), then \(|\Phi(A^p)\Phi(A^q)| \leq \Phi ...
openaire +2 more sources