Results 51 to 60 of about 37,446 (199)
Preconditioners for domain decomposition methods
Computers & Mathematics with Applications, 2001 For solving nonsymmetric linear system, the Schur domain decomposition method proposes a dual approach of the Schur formulation. One constraint of this method is that its condition number increases with the amount of subdomains. In this paper, a family of parallel global preconditioners, which can alleviate the above constraint, are presented.
X. Juvigny, J. Ryan
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Preconditioners in spectral approximation [PDF]
Annals of Functional Analysis, 2016 Let H be a complex separable Hilbert space, and let A be a bounded self-adjoint operator on H. Consider the orthonormal basis B={e1,e2,…} and the projection Pn of H onto the finite-dimensional subspace spanned by the first n elements of B. The finite-dimensional truncations An=PnAPn shall be regarded as a sequence of finite matrices by restricting ...
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Block two-stage preconditioners
Applied Mathematics Letters, 2001 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Violeta Migallón +2 more
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The Mixed Finite Element Multigrid Preconditioned MINRES Method for Stokes Equations
Journal of Applied Fluid Mechanics, 2016 The study considers the saddle point problem arising from the mixed finite element discretization of the steady state Stokes equations. The saddle point problem is an indefinite system of linear equations, a feature that degrades the performance of any
Kizito Muzhinji +2 more
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An inverse LU preconditioner based on the Sherman–Morrison formula
Analele Stiintifice ale Universitatii Ovidius Constanta: Seria MatematicaAn approximate inverse LU preconditioner is constructed based on the Sherman–Morrison formula. Applying recursively that inversion formula a multiplicative decomposition of the inverse of a matrix is obtained.
Bru R., Cerdán J., Marín J., Mas J.
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The Monomial Preconditioned SSOR Method for Linear Complementarity Problem
IEEE Access, 2019 This paper aims to show that the existing preconditioned symmetric successive over-relaxation (SSOR) approach to solving the linear complementarity problem (LCP) is not valid.
Xinna Mao +3 more
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EngIn this work, we proposed a dynamic inverse solution with spatio-temporal constraints of the nonlinear heat diffusion problem in 1D and 2D based on a regularized Gauss–Newton and Krylov subspace with a preconditioner.
Luis Fernando Alvarez-Velasquez +1 more
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A generalized preconditioned MHSS method for a class of complex symmetric linear systems
Mathematical Modelling and Analysis, 2013 Based on the MHSS (Modified Hermitian and skew-Hermitian splitting) and preconditioned MHSS methods, we will present a generalized preconditioned MHSS method for solving a class of complex symmetric linear systems.
Mehdi Dehghan +2 more
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A preconditioner for the Schur complement matrix [PDF]
Advances in Engineering Software, 2006 Fil: Storti, Mario Alberto. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Conicet - Santa Fe. Instituto de Desarrollo Tecnologico para la Industria Quimica. Universidad Nacional del Litoral.
Storti, Mario Alberto +5 more
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Progressive Iterative Approximation with Preconditioners
Mathematics, 2020 The progressive iterative approximation (PIA) plays an important role in curve and surface fitting. By using the diagonally compensated reduction of the collocation matrix, we propose the preconditioned progressive iterative approximation (PPIA) to ...
Chengzhi Liu, Zhongyun Liu
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