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Zapiski Nauchnykh Seminarov POMI, 2010, Volume 382, Pages 125–140
(Mi znsl3865)
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This article is cited in 2 scientific papers (total in 2 papers)
On Ostrowski's disk theorem and lower bounds for the smallest eigenvalues and singular values
L. Yu. Kolotilina St. Petersburg Department of V. A. Steklov Institute of Mathematics, Russian Academy of Sciences, St. Petersburg, Russia
Abstract:
The paper refines the classical Ostrowski disk theorem and suggests lower bounds for the smallest-in-modulus eigenvalue and the smallest singular value of a square matrix under certain diagonal dominance conditions. A lower bound for the smallest-in-modulus eigenvalue of a product of $m\ge2$ matrices satisfying joint diagonal dominance conditions is obtained. The particular cases of the bounds suggested that correspond to the infinity norm are discussed and compared with some known results. Bibl. 9 titles.
Key words and phrases:
disk theorem, lower bound, smallest-in-modulus eigenvalue, smallest singular value, diagonal dominance conditions, nonsingular $M$-matrix, $H$-matrix.
Received: 03.11.2010
Citation:
L. Yu. Kolotilina, “On Ostrowski's disk theorem and lower bounds for the smallest eigenvalues and singular values”, Computational methods and algorithms. Part XXIII, Zap. Nauchn. Sem. POMI, 382, POMI, St. Petersburg, 2010, 125–140; J. Math. Sci. (N. Y.), 176:1 (2011), 68–77
Linking options:
https://www.mathnet.ru/eng/znsl3865 https://www.mathnet.ru/eng/znsl/v382/p125
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Abstract page: | 445 | Full-text PDF : | 144 | References: | 54 |
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