Block extrapolation methods with applications

被引:8
作者
Jbilou, K. [1 ]
Messaoudi, A. [2 ]
机构
[1] Univ Littoral Cote dOpale, Lab Math Pures & Appl, 50 Rue F Buisson,BP 699, F-62228 Calais, France
[2] Mohamed V Univ, Ecole Normale Super, Rabat, Morocco
关键词
Block Krylov; Extrapolation; Projection; Sequence transformation; VECTOR; MATRIX; IMPLEMENTATION; ACCELERATION; CONVERGENCE;
D O I
10.1016/j.apnum.2016.04.001
中图分类号
O29 [应用数学];
学科分类号
070104 ;
摘要
In the present paper we introduce new block extrapolation methods as generalizations of the well known vector extrapolation methods. We give expressions of the obtained approximations via the Schur complement and also propose an efficient implementation of these methods. Applications to linearly generated sequences are given and extensions to nonlinear problems are also given. Applications of the proposed block extrapolation methods to some nonlinear matrix equations are considered and some numerical examples are given. (C) 2016 IMACS. Published by Elsevier B.V. All rights reserved.
引用
收藏
页码:154 / 164
页数:11
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