数学与系统科学研究院

计算数学所学术报告

报告人：        胡齐芽 副研究员

                              中国科学院计算数学所

                                hqy@lsec.cc.ac.cn

报告题目    Preconditioning the Poincare-Steklov Operator

     Arising from the Domain Decomposition with Lagrange Multipliers

Abstract: In this talk we are concerned with the

non-overlapping domain decomposition method with nonmatching grids, in which the interface unknown is chosen as the Lagrange multiplier. At first we shall introduce a kind of Poincare-Steklov operators corresponding to this domain decomposition,

and shall describe the relation between this kind of operators and the known Steklov-Poincare operator. We then, based on this relation, propose inexact solvers to the Poincare-Steklov operator from a unified viewpoint. Finally we shall construct efficient preconditioners for the saddle-point system associated with the DDM with Lagrange multipliers.

报告时间：2003年8月7日  下午4：00-5：00

报告地点：科技综合楼三层报告厅