張俊麗
(內(nèi)蒙古民族大學 數(shù)學學院,內(nèi)蒙古 通遼 028043)
非奇異H -矩陣的一類迭代判別法
張俊麗
(內(nèi)蒙古民族大學 數(shù)學學院,內(nèi)蒙古 通遼 028043)
非奇異H-矩陣應用廣泛,但在實用中其判定十分困難。根 -對角占優(yōu)矩陣與非奇異H-矩陣的關系,給出一類非奇異H-矩陣的迭代判定準則,對已有的相關結(jié)果進行推廣和改進,并用數(shù)值算例驗證了該判定準則的有效性。
非奇異H-矩陣;-對角占優(yōu)矩陣;不可約;非零元素
非奇異H-矩陣在計算數(shù)學、動力系統(tǒng)理論以及神經(jīng)網(wǎng)絡等眾多領域都有重要的應用,但是其判定卻比較困難。近年來很多學者對其作了較深入的研究,并給出了一些重要結(jié)果[1-9]。例如,文獻[1]給出了非奇異H-矩陣的簡捷判據(jù);文獻[3]給出了非奇異H-矩陣的迭代判定方法,改進了文獻[1]的結(jié)果。本文給出一類非奇異H-矩陣的新迭代判定準則,從而推廣了文獻[1-4]的結(jié)果。
為敘述方便,引入下列記號:
Cn×n表示 n×n階復矩陣的集合;
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(責任編輯 :鄧光輝)
An Iterative Method for the Determination of Non-singular H-Matrices
ZHANG Junli
(School of Mathematics,Inner Mongolia University for the Nationalities,Tongliao Inner Mongolia 028043,China)
Although the non-singular H-matrix has found its wide applications nowadays, the determination of its practical use seems rather difficult.An improvement and its promotion have been made of the relevant results based on the analysis of the relations between -diagonally dominant matrices and non-singular H-matrices, with the criteria of the latter one accordingly determined, thus further verifying the validity of these criteria with numerical examples.
non-singular H-matrix;-diagonally dominant matrix;irreducible;non-zero elements chain
O151.21
A
1673-9833(2016)04-0074-04
10.3969/j.issn.1673-9833.2016.04.014
2016-05-30
國家自然科學基金資助項目(11361038),內(nèi)蒙古自然科學與技術研究基金資助項目(NJZY13159)
張俊麗(1980-),女,山東菏澤人,內(nèi)蒙古民族大學講師,主要研究方向為數(shù)值代數(shù),E-mail:jl_zhang7706@163.com