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Regularization methods for the construction of preconditioners for saddle point problems
For the iterative solution of saddle point problems one needs efficient preconditioners to achieve a fast convergence. Three types of preconditioners are presented also for problems with a highly singular pivot blo...
Applied mathematics
- 2020 •
- D •
- Link
Rok uplatnění
D - Stať ve sborníku
Výsledek na webu
Saddle Point Problems, Iterative Solutions and Preconditioning: A Short Overview
In this contribution we attempt to review recent advances in the field of iterative methods for solving large saddle point problems. The main focus is on developments in the area of Krylov subspace methods and block precond...
BA - Obecná matematika
- 2004 •
- D
Rok uplatnění
D - Stať ve sborníku
Unified analysis of preconditioning methods for saddle point matrices
Short and unified proofs of spectral properties of major preconditioners for saddle point problems are presented. The need to sufficiently accurately construct oreigenvalues with positive real parts and non-dominating imagi...
BA - Obecná matematika
- 2015 •
- Jx •
- Link
Rok uplatnění
Jx - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
Výsledek na webu
Multiple critical points of saddle geometry functionals
the assumptions of the Saddle Point Theorem and moreover is bounded from below has at least three critical points. Apparently, there is a global minimizer and a saddle point and we show the existence of a...
Pure mathematics
- 2018 •
- Jimp •
- Link
Rok uplatnění
Jimp - Článek v periodiku v databázi Web of Science
Výsledek na webu
Limiting Accuracy of Segregated Solution Methods for Nonsymmetric Saddle Point Problems
Nonsymmetric saddle point problems arise in a wide variety of applications in computational science and engineering. The aim of this paper is to discuss numerical behavior of several nonsymmetric iterative methods applied f...
BA - Obecná matematika
- 2008 •
- Jx
Rok uplatnění
Jx - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
Preconditioners for regularized saddle point problems with an application for heterogeneous Darcy flow problems
Saddle point problems arise in the modeling of many important practical situations. Preconditioners for the corresponding matrices of block-triangular form flow problem,possibly with strong heterogeneity and non-sy...
BA - Obecná matematika
- 2015 •
- Jx •
- Link
Rok uplatnění
Jx - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
Výsledek na webu
Preconditioners for regularized saddle point matrices
Saddle point problems with singular or indefinite pivot blockmatrix arise in various applications. In some problems it may be necessary to regularize the corresponding matrix is some way. By straightforward derivat...
BA - Obecná matematika
- 2011 •
- Jx •
- Link
Rok uplatnění
Jx - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
Výsledek na webu
A Saddle Point Principle Domain Decomposition for the Solution of Contact Problems
BA - Obecná matematika
- 1993 •
- X
Rok uplatnění
X - Nezařazeno
Short-therm Reccurrences for Indefinite Preconditioning of Saddle Point Problems.
Annotation not available...
BD - Teorie informace
- 2000 •
- Vx
Rok uplatnění
Vx - Nezařazeno - Výzkumná zpráva obsahující utajované informace (takový výsledek lze do RIV vložit pouze v případě, že zpráva obsahuje utajované informace a pole R12 = U), nebo souhrnná výzkumná zpráva
Corrigendum to Preconditioners for regularized saddle point problems with an application for heterogeneous Darcy flow problems
of nonsingularity ofna nonsymmetric saddle point system, second the number of unit eigenvalues...
BA - Obecná matematika
- 2016 •
- Jx •
- Link
Rok uplatnění
Jx - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
Výsledek na webu
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