DGMRES and index numerical range of matrices

Autor:	Abbas Salemi, Malihe Safarzadeh
Rok vydání:	2018
Předmět:	Computational Mathematics Polynomial Index (economics) Rate of convergence Applied Mathematics 010102 general mathematics Applied mathematics 010103 numerical & computational mathematics 0101 mathematics Numerical range 01 natural sciences Mathematics
Zdroj:	Journal of Computational and Applied Mathematics. 335:349-360
ISSN:	0377-0427
DOI:	10.1016/j.cam.2017.12.009
Popis:	In this paper, the index numerical range and index polynomial numerical hulls of matrices are introduced and some of their properties are investigated. Also, the relationship between the index numerical range and the numerical range of matrices are studied. Moreover, by using these notions, we study the convergence rate of the DGMRES method.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::63b72bd758eda7f2591d30532504dd54 https://doi.org/10.1016/j.cam.2017.12.009 Zobrazit plný text záznamu Full Text from ScienceDirect