منابع مشابه
A Criterion for Stability of Matrices
Ž . Let A be an n = n matrix and let s A be its spectrum. The stability Ž . Ž .4 modulus of A is s A s max Re l: l g s A , and A is said to be stable Ž . if s A 0. The stability of a matrix is related to the Routh]Hurwitz problem on the number of zeros of a polynomial that have negative real parts. Much research has been devoted to the latter. The first solution w x dates back to Sturm 21, p. 3...
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Let `p be the space of all p-summable sequences on Z. An infinite matrix is said to have `p-stability if it is bounded and has bounded inverse on `p. In this paper, a practical criterion is established for the `p-stability of convolution-dominated infinite matrices.
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The Arnold stability criterion suggests that a stationary ow of an ideal incompressible uid is stable if a certain quadratic form is deenite. We show that, in three or more dimensions, this quadratic form is never deenite. Typically the form is indeenite, and the spectrum of the associated Hermitian operator ranges from ?1 to 1. The exceptional case is where the velocity eld is harmonic (soleno...
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قاعده مقتضی و مانع در متون فقهی کم و بیش مستند احکام قرار گرفته و مورد مناقشه فقهاء و اصولیین می باشد و مشهور معتقند مقتضی و مانع، قاعده نیست بلکه یکی از مسائل ذیل استصحاب است لذا نگارنده بر آن شد تا پیرامون این قاعده پژوهش جامعی انجام دهد. به عقیده ما مقتضی دارای حیثیت مستقلی است و هر گاه می گوییم مقتضی احراز شد یعنی با ماهیت مستقل خودش محرز گشته و قطعا اقتضاء خود را خواهد داشت مانند نکاح که ...
15 صفحه اولStability of 2-d Polynomial Matrices
Necessary and suucient conditions are formulated for checking stability of a 2-D polynomial matrix. The conditions stem from a general optimization methodology mixing LFRs, LMIs and the S-procedure. They are expressed as a tractable linear programming problem over the cone of positive semideenite matrices.
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ژورنال
عنوان ژورنال: Journal of Mathematics Research
سال: 2015
ISSN: 1916-9809,1916-9795
DOI: 10.5539/jmr.v1n1p82