Results 41 to 50 of about 510,471 (302)
Partial inverted covariance matrix. [PDF]
, 2019 Partial inverted covariance matrix.
Alan G. Phipps (6635669) +1 more
core +1 more source
Partial Permutation and Alternating Sign Matrix Polytopes
SIAM Journal on Discrete Mathematics, 2022 We define and study a new family of polytopes which are formed as convex hulls of partial alternating sign matrices. We determine the inequality descriptions, number of facets, and face lattices of these polytopes. We also study partial permutohedra that we show arise naturally as projections of these polytopes.
Dylan Heuer, Jessica Striker
openaire +3 more sources
Eigenstate Correlations in Dual-Unitary Quantum Circuits: Partial Spectral Form Factor [PDF]
QuantumWhile the notion of quantum chaos is tied to random matrix spectral correlations, also eigenstate properties in chaotic systems are often assumed to be described by random matrix theory.
Felix Fritzsch +2 more
doaj +1 more source
Partial matrix contractions and intersections of matrix balls
Linear Algebra and its Applications, 1992 For a rectangular matrix \(C\), let \(s_ 1(C) \geq s_ 2(C) \geq \dots\) denote the singular values of \(C\), let \(\| C\| = s_ 1(C)\), and when \(\| C\| \leq 1\), define \(D_ C = \sqrt{I - C^* C}\). Fix \(n \times k\) \(A\) and \(p \times m\) \(B\) and let \(\mathcal M\) be the set of all \(X\) such that there exists \(Y\) for which \(\| \left[ {A\atop
Nævdal, Geir, Woerdeman, Hugo J.
openaire +2 more sources
Partial Discharge Detection and Recognition in Random Matrix Theory Paradigm
IEEE Access, 2017 The detection and recognition of partial discharge (PD) is an important topic in insulation tests and diagnoses. Take advantage of the affluent results from random matrix theory (RMT), such as eigenvalue analysis, M-P law, the ring law, and so on, a ...
Lingen Luo +4 more
doaj +1 more source
Inferential control with the aid of modified QPLS-based soft sensor for an industrial FCCU fractionator [PDF]
, 2010 A modified quadratic partial least squares (MQPLS) algorithm based on non-linear constrained programming is proposed, in which a sequential unconstrained minimisation technique is employed to calculate the outer input weights and the parameters of inner ...
Yang, Minghui +7 more
core +1 more source
Partially isometric matrices [PDF]
, 1967 The complex, not necessarily square matrix A is called a partial isometry if the vectors x and Ax have the same Euclidean norm whenever x is in the orthogonal complement of the null space of A. The main result s of the paper give necessary and sufficient
Hearon, John Z.
core +1 more source
Necessary conditions for reaction-diffusion system with delay preserving positivity
Electronic Journal of Qualitative Theory of Differential Equations, 2016 We consider the reaction--diffusion system with delay \begin{equation*} \left\{\begin{aligned} &\frac{\partial u}{\partial t}=A(t,x)\Delta u-\sum_{i=1}^{k}\gamma_{i}(t,x)\partial_{x_{i}}u +f(t,u_{t}) , &x\in \Omega; \\ &B(u)|_{\partial \Omega}=0.\\ \
Lirui Feng +3 more
doaj +1 more source
Organoids in pediatric cancer research
FEBS 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
Regularized estimation of large-scale gene association networks using graphical Gaussian models [PDF]
, 2009 Graphical Gaussian models are popular tools for the estimation of (undirected) gene association networks from microarray data. A key issue when the number of variables greatly exceeds the number of samples is the estimation of the matrix of partial ...
Schäfer, Juliane +10 more
core +1 more source