Results 11 to 20 of about 573 (115)
Location of singular points in orthorhombic media
Геофизический журнал, 2022 The dependence of the location of singular points of orthorhombic (ORT) media on the stiffness coefficients , and phase velocity at the singularity point is studied under the assumption that are larger than and .
Yu.V. Roganov +2 more
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Christoffel Transformations for Matrix Orthogonal Polynomials in the Real Line and the non-Abelian 2D Toda Lattice Hierarchy [PDF]
International Mathematics Research Notices, 2016 Given a matrix polynomial $W(x)$, matrix bi-orthogonal polynomials with respect to the sesquilinear form $\langle P(x),Q(x)\rangle_W=\int P(x) W(x)\operatorname{d}μ(x)(Q(x))^{\top}$, $P(x),Q(x)\in\mathbb R^{p\times p}[x]$, where $μ(x)$ is a matrix of Borel measures supported in some infinite subset of the real line, are considered.
Álvarez Fernández, Carlos +4 more
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Spectral form factor in the τ-scaling limit
Journal of High Energy Physics, 2023 We study the spectral form factor (SFF) of general topological gravity in the limit of large time and fixed temperature. It has been observed recently that in this limit, called the tau-scaling limit, the genus expansion of the SFF can be summed up and ...
Kazumi Okuyama, Kazuhiro Sakai
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Crystals, 2022 The in-plane elastic waves in periodically multilayered isotropic structures, which are decoupled from the out-of-plane waves, are represented mainly by the frequency–wavenumber spectra and occasionally by the frequency–phase velocity spectra as well as ...
Qiangqiang Li, Yongqiang Guo, Yajun Wang
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ON A GENERALIZATION OF THE MAXIMUM ENTROPY THEOREM OF BURG
Revista de Matemática: Teoría y Aplicaciones, 2017 In this article we introduce some matrix manipulations that allow us to obtain a version of the original Christoffel-Darboux formula, which is of interest in many applications of linear algebra. Using these developments matrix and Jensen’s inequality, we
JOSÉ MARCANO +2 more
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PLoS ONE, 2019 When non-linear models are fitted to experimental data, parameter estimates can be poorly constrained albeit being identifiable in principle. This means that along certain paths in parameter space, the log-likelihood does not exceed a given statistical ...
Daniel Lill, Jens Timmer, Daniel Kaschek
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Analyze the multi-wire magnetic field of HGMS by semi-analytical method
Results in Physics, 2018 In this paper, a semi-analytical method (SAM) to analyze the magnetic field distribution in High-Gradient Magnetic Separation (HGMS) was promoted, constituting a combination of conform mapping (includes Schwarz-Christoffel (S-C) mapping) and finite ...
Mei Yuan +3 more
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Dual Szegö pairs of sequences of rational matrix-valued functions
International Journal of Mathematics and Mathematical Sciences, 2006 We study certain sequences of rational matrix-valued functions with poles outside the unit circle. These sequences are recursively constructed based on a sequence of complex numbers with norm less than one and a sequence of strictly contractive matrices.
Andreas Lasarow
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Applied Sciences, 2018 The partial-wave method takes advantage of the Christoffel equation’s generality to represent waves within a waveguide. More specifically, the partial-wave method is well known for its usefulness when calculating dispersion curves for multilayered ...
Christopher Hakoda, Cliff J. Lissenden
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Global Asymptotics for the Christoffel-Darboux Kernel of Random Matrix Theory
, 2014 The investigation of universality questions for local eigenvalue statistics continues to be a driving force in the theory of Random Matrices. For Matrix Models [53] the method of orthogonal polynomials can be used and the asymptotics of the Christoffel-Darboux kernel [59] become the key for studying universality.
Kriecherbauer, Thomas +3 more
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