Results 61 to 70 of about 692,618 (182)

Symbolic algorithm for solving SLAEs with multi-diagonal coefficient matrices

Discrete and Continuous Models and Applied Computational Science
Systems of linear algebraic equations with multi-diagonal coefficient matrices may arise after many different scientific and engineering problems, as well as problems of the computational linear algebra where finding the solution of such a system of ...
Veneva Milena
doaj   +1 more source

On separable Fokker-Planck equations with a constant diagonal diffusion matrix

, 1999
We classify (1+3)-dimensional Fokker-Planck equations with a constant diagonal diffusion matrix that are solvable by the method of separation of variables. As a result, we get possible forms of the drift coefficients $B_1(\vec x),B_2(\vec x),B_3(\vec x)$
Alexander Zhalij, Arscott F, Buchholz H, Eisenhart L P, Erdélyi A, Gardiner C W, Miller W Jr, Morse P M, Risken H, Sukhomlin N B, Urwin K, van Kampen N G, Watson G N, Zhdanov R Z, Zhdanov R Z, Zhdanov R Z   +15 more
core   +3 more sources

Automorphisms of free braided nonassociative algebras of rank 2

Қарағанды университетінің хабаршысы. Математика сериясы
We prove the elementary reducibility of any nonaffine automorphism of a free nonassociative algebra of rank two over an arbitrary field. Using this result establish a property of automorphisms of this algebra that will be needed in later. We then derive
R. Mutalip, B.A. Duisengaliyeva, A.S. Naurazbekova   +2 more
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Deflection Tomography Reconstruction Based on Diagonal Total Variation

MATEC Web of Conferences, 2018
In view of the shortages of the reconstruction algorithm based on Total Variation (TV) minimum under the framework of measured field compressed sensing, we study the measured field sparse representation method and solving method of optimization equation,
Li Huaxin, Pan Jinxiao
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The Texture One-Zero Neutrino Mass Matrix with Vanishing Trace

Advances in High Energy Physics, 2018
In the light of latest neutrino oscillation data, we have investigated the one-zero Majorana neutrino mass matrix Mν with zero sum condition of mass eigenvalues in the flavor basis, where charged lepton mass matrix is diagonal. Among the six possible one-
Madan Singh
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A note on explicit conditions for diagonal stability

AIMS Mathematics
<p>In this short note, we presented a number of alternative explicit necessary and sufficient conditions for diagonal stability along with a new proof of a well-known result in this regard.</p>
Ali Algefary, Jianhong Xu
openaire   +2 more sources

A second-level diagonal preconditioner for single-step SNPBLUP

Genetics Selection Evolution, 2019
Background The preconditioned conjugate gradient (PCG) method is an iterative solver of linear equations systems commonly used in animal breeding. However, the PCG method has been shown to encounter convergence issues when applied to single-step single ...
Jeremie Vandenplas, Mario P. L. Calus, Herwin Eding, Cornelis Vuik   +3 more
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Revisiting Gassmann-type relationships within Biot poroelastic theory [PDF]

Solid Earth
Gassmann's equations have long served as a cornerstone of geophysics and rock physics, widely regarded as exact within their domain of applicability. However, recent studies have questioned their validity, arguing that Gassmann's derivation involves a ...
Y. Alkhimenkov, Y. Y. Podladchikov
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Diagonal boundary conditions in critical loop models

23 ...
Downing, Max, Jacobsen, Jesper Lykke, Nivesvivat, Rongvoram, Ribault, Sylvain, Saleur, Hubert   +4 more
openaire   +2 more sources

Improving the condition number of estimated covariance matrices

Tellus: Series A, Dynamic Meteorology and Oceanography, 2020
High dimensional error covariance matrices and their inverses are used to weight the contribution of observation and background information in data assimilation procedures.
Jemima M. Tabeart, Sarah L. Dance, Amos S. Lawless, Nancy K. Nichols, Joanne A. Waller   +4 more
doaj   +1 more source