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Khosro Sayevand

Khosro Sayevand

Academic rank: Professor
ORCID:
Education: PhD.
ScopusId:
HIndex:
Faculty: Mathematical Sciences and Statistics
Address: Malayer University
Phone: 081-33398981

Research

Title
Solving system of nonlinear matrix equations over Hermitian positive definite matrices
Type
JournalPaper
Keywords
Solving system of nonlinear matrix equations , Hermitian positive definite matrices
Year
2022
Journal Linear and Multilinear Algebra
DOI
Researchers Khosro Sayevand

Abstract

In this article, we first introduce the necessary and sufficient conditions for the existence of the Hermitian positive definite solution group of a system of nonlinear matrix equations X1p1+A1∗X1−s11A1+A2∗X2−s12A2+⋯+Am−1∗Xm−1−s1m−1Am−1+Am∗Xm−s1mAm=I,X2p2+A1∗X2−s21A1+A2∗X3−s22A2+⋯+Am−1∗Xm−s2m−1Am−1+Am∗X1−s2mAm=I,⋮Xmpm+A1∗Xm−sm1A1+A2∗X1−sm2A2+⋯+Am−1∗Xm−2−smm−1Am−1+Am∗Xm−1−smmAm=I. Then we propose an inversion-free iteration method to find the Hermitian positive definite solution group of the system of nonlinear matrix equations. Finally, the accuracy and effectiveness of the proposed method in compare to some existing algorithms are demonstrated by various numerical examples.