Results 31 to 40 of about 191,170 (252)

Scattering of Sound Waves in Two Stepped Non-uniformly Lined Duct

Archives of Acoustics, 2020
Scattering of sound waves in two stepped cylindrical duct which walls are coated with different acoustically absorbent materials is investigated by using Wiener-Hopf technique directly and by determining scattering matrices.
Ayşe TIRYAKIOGLU, Ahmet DEMIR
doaj   +1 more source

Optimal solvers for linear systems with fractional powers of sparse SPD matrices [PDF]

Numerical Linear Algebra with Applications, 2016
In this paper, we consider efficient algorithms for solving the algebraic equation Aαu=f ...
S. Harizanov, R. Lazarov, S. Margenov, P. Marinov, Y. Vutov   +4 more
semanticscholar   +1 more source

New aspects of two Hessian-Riemannian metrics in plane [PDF]

Surveys in Mathematics and its Applications, 2020
Due to the importance of Hessian structures we express some algebraic and geo\-me\-tric features of two such semi-Riemannian metrics in dimension two. For this purpose we use the separable coordinate systems of the Euclidean plane. Several properties are
Mircea Crâșmăreanu
doaj  

Exact S-matrices for supersymmetric sigma models and the Potts model [PDF]

, 2002
We study the algebraic formulation of exact factorizable S-matrices for integrable two-dimensional field theories. We show that different formulations of the S-matrices for the Potts field theory are essentially equivalent, in the sense that they can be ...
Affleck I, Andrews G E, Barber M N, Baxter R, Berg B, Birman J, Chari V, Chim L, Chim L, den Nijs M, Dorey P, Dorey P, Fateev V A, Ghoshal S, Ghoshal S, I Affleck, Izergin A G, Jimbo M, Kim J D, Koo W M, Koubek A, Martin P P, Murakami J, Nicholas Read, Nienhuis B, Paul Fendley, Read N, Saleur H, Saleur H, Smirnov F A, Temperley H N V, Zamolodchikov A B, Zamolodchikov A B, Zamolodchikov A B, Zamolodchikov A B, Zamolodchikov A B   +35 more
core   +2 more sources

Dynamics of random Boolean networks under fully asynchronous stochastic update based on linear representation. [PDF]

PLoS ONE, 2013
A novel algebraic approach is proposed to study dynamics of asynchronous random Boolean networks where a random number of nodes can be updated at each time step (ARBNs). In this article, the logical equations of ARBNs are converted into the discrete-time
Chao Luo, Xingyuan Wang
doaj   +1 more source

Extended Second-Order Multireference Algebraic Diagrammatic Construction Theory for Charged Excitations. [PDF]

Journal of Chemical Theory and Computation, 2020
We report a new implementation of multireference algebraic diagrammatic construction theory (MR-ADC) for simulations of electron attachment and ionization in strongly correlated molecular systems (EA/IP-MR-ADC). Following our recent work on IP-MR-ADC [J.
K. Chatterjee, A. Sokolov
semanticscholar   +1 more source

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

Uniform convergence of V-cycle multigrid algorithms for two-dimensional fractional Feynman-Kac equation

, 2017
In this paper we derive new uniform convergence estimates for the V-cycle MGM applied to symmetric positive definite Toeplitz block tridiagonal matrices, by also discussing few connections with previous results. More concretely, the contributions of this
Chen, Minghua, Deng, Weihua, Serra-Capizzano, Stefano   +2 more
core   +1 more source

An Algebraic Multilevel Preconditioner with Low-Rank Corrections for Sparse Symmetric Matrices

SIAM Journal on Matrix Analysis and Applications, 2016
This paper describes a multilevel preconditioning technique for solving sparse symmetric linear systems of equations. This “Multilevel Schur Low-Rank” (MSLR) preconditioner first builds a tree structure $\mathcal{T}$ based on a hierarchical decomposition
Yuanzhe Xi, Ruipeng Li, Y. Saad
semanticscholar   +1 more source

Modification Methods for Inverting Matrices and Solving Systems of Linear Algebraic Equations [PDF]

Mathematics of Computation, 1972
Modification methods for inverting matrices and solving systems of linear algebraic equations are developed from Broyden’s rank-one modification formula. Several algorithms are presented that take as few, or nearly as few, arithmetic operations as Gaussian elimination and are well suited for the handling of data.
openaire   +2 more sources