Sharp condition number estimates for the symmetric 2-lagrange multiplier method

Stephen W. Drury, Sébastien Loisel

Research output: Chapter in Book/Report/Conference proceedingChapter

7 Citations (Scopus)
69 Downloads (Pure)


Domain decomposition methods are used to find the numerical solution of large boundary value problems in parallel. In optimized domain decomposition methods, one solves a Robin subproblem on each subdomain, where the Robin parameter a must be tuned (or optimized) for good performance.We show that the 2-Lagrange multiplier method can be analyzed using matrix analytical techniques and we produce sharp condition number estimates.

Original languageEnglish
Title of host publicationDomain Decomposition Methods in Science and Engineering XX
Subtitle of host publicationPart II
Number of pages7
ISBN (Electronic)978-3-642-35275-1
Publication statusPublished - 2013

Publication series

NameLecture Notes in Computational Science and Engineering
ISSN (Print)1439-7358

ASJC Scopus subject areas

  • Engineering(all)
  • Computational Mathematics
  • Modelling and Simulation
  • Control and Optimization
  • Discrete Mathematics and Combinatorics


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