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The diagonally dominant degree and disc separation for the schur complement of Ostrowski matrix
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نویسنده
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zhao j. ,wang f. ,li y.
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منبع
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journal of applied mathematics - 2013 - دوره : 2013 - شماره : 0
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چکیده
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By applying the properties of schur complement and some inequality techniques,some new estimates of diagonally and doubly diagonally dominant degree of the schur complement of ostrowski matrix are obtained,which improve the main results of liu and zhang (2005) and liu et al. (2012). as an application,we present new inclusion regions for eigenvalues of the schur complement of ostrowski matrix. in addition,a new upper bound for the infinity norm on the inverse of the schur complement of ostrowski matrix is given. finally,we give numerical examples to illustrate the theory results. © 2013 jianxing zhao et al.
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آدرس
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school of mathematics and statistics,yunnan university,kunming, China, school of mathematics and statistics,yunnan university,kunming,yunnan 650091,china,department of mathematics,heze university,heze, China, school of mathematics and statistics,yunnan university,kunming, China
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Authors
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