ON THE GENERALIZED DETERIORATED POSITIVE SEMI-DEFINITE AND SKEW-HERMITIAN SPLITTING PRECONDITIONER  

作　　者：Davod Hezari Vahid Edalatpour Hadi Feyzollahzadeh Davod Khojasteh Salkuyeh 

机构地区：[1]Faculty of Mathematical Sciences,University of Guilan,Rasht,Iran [2]Department of Mathematical and Computer Science,Technical Faculty, University of Bonab,Bonab,Iran [3]Facultty of Mathematical Sciences,University of Guilan.Rasht,Ivan

出　　处：《Journal of Computational Mathematics》2019年第1期18-32,共15页计算数学（英文）

摘　　要：For nonsymmetric saddle point problems,Huang et al.in [Numer.Algor.75 (2017), pp.1161-1191]established a generalized variant of the deteriorated positive semi-definite and skew-Hermitian splitting (GVDPSS)preconditioner to expedite the convergence speed of the Krylov subspace iteration methods like the GMRES method.In this paper,some new convergence properties as well as some new numerical results are presented to validate the theoretical results.

关 键 词：SADDLE point problem Preeonditioner NONSYMMETRIC SYMMETRIC Positive definite Krylov subspaee method 

分 类 号：O1[理学—数学]