Towards Robust Algebraic Multigrid Methods for Nonsymmetric Problems

Автор: James Lottes

Език:

Корици: С твърди корици

Издател: Springer International Publishing AG

Наличност: Външен склад в ограничено количество

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This thesis presents a rigorous, abstract analysis of multigrid methods for positive nonsymmetric pr...

Информация за книгата

Автор

James Lottes

Език

Английски език

Корици

Книга - С твърди корици

Издадена

2017

страници

131

EAN

9783319563053

ISBN

331956305X

Enbook ID

15996196

Издател

Springer International Publishing AG

Теглоt

3435

Размери

155 x 235 x 13

Пълно описание

This thesis presents a rigorous, abstract analysis of multigrid methods for positive nonsymmetric problems, particularly suited to algebraic multigrid, with a completely new approach to nonsymmetry which is based on a new concept of absolute value for nonsymmetric operators. Multigrid, and in particular algebraic multigrid, has become an indispensable tool for the solution of discretizations of partial differential equations. While used in both the symmetric and nonsymmetric cases, the theory for the nonsymmetric case has lagged substantially behind that for the symmetric case. This thesis closes some of this gap, presenting a major and highly original contribution to an important problem of computational science. The new approach to nonsymmetry will be of interest to anyone working on the analysis of discretizations of nonsymmetric operators, even outside the context of multigrid. The presentation of the convergence theory may interest even those only concerned with the symmetric case, as it sheds some new light on and extends existing results.

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Towards Robust Algebraic Multigrid Methods for Nonsymmetric Problems

Информация за книгата

Пълно описание

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