Results 81 to 90 of about 197,517 (218)
, 1997 The decomposition of a matrix A into a product of two or three matrices can (depending on the characteristics of those matrices) be a very useful first step in computing such things as the rank, the determinant, or an (ordinary or generalized) inverse (of A) as well as a solution to a linear system having A as its coefficient matrix.
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On the Spectrum of a Discrete Non-Hermitian Quantum System
Symmetry, Integrability and Geometry: Methods and Applications, 2009 In this paper, we develop spectral analysis of a discrete non-Hermitian quantum system that is a discrete counterpart of some continuous quantum systems on a complex contour.
Ebru Ergun
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Observations on the Computation of Eigenvalue and Eigenvector Jacobians
Algorithms, 2019 Many scientific and engineering problems benefit from analytic expressions for eigenvalue and eigenvector derivatives with respect to the elements of the parent matrix.
Andrew J. Liounis +2 more
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Almost Eigenvalues and Eigenvectors of Almost Mathieu Operators
, 2015 The almost Mathieu operator is the discrete Schr\"odinger operator $H_{\alpha,\beta,\theta}$ on $\ell^2(\mathbb{Z})$ defined via $(H_{\alpha,\beta,\theta}f)(k) = f(k + 1) + f(k - 1) + \beta \cos(2\pi \alpha k + \theta) f(k)$. We derive explicit estimates
Strohmer, Thomas, Wertz, Tim
core
Biology, Medicine & Natural Product Chemistry, 2017 This research aims to determine the number of female residents in Trenggalek Regency in 2021 based on data on birth rate and life expectancy. The use of eigenvalues and eigenvectors aims to determine the dividing age distribution by Leslie matrix model ...
Dewi Anggreini
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Discrete inequalities of Wirtinger's type for higher differences
Journal of Inequalities and Applications, 1997 Discrete version of Wirtinger's type inequality for higher differences, where and is considered. Under some conditions, the best constants , and are determined.
Milovanović Gradimir V +1 more
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Mathematical Modeling of Eigenvibrations of the Shallow Shell with an Attached Oscillator
Учёные записки Казанского университета: Серия Физико-математические наукиFor the problem of eigenvibrations of the shallow shell with an attached oscillator, a new symmetric variational statement in the Hilbert space was proposed.
D. M. Korosteleva, S. I. Solov’ev
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On the coding of Jacobi's method of computing eigenvalues and eigenvectors of real, symmetric matrices [PDF]
, 1959 F. J. Corbató
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New fractional cosine transform and its application
Tongxin xuebao, 2005 A new Fractional Cosine Transform was proposed. It was a weighted combination of the first two integer-order cosine transforms of the original signal, and it has the same eigenvectors as the cosine transform’s, but the different eigenvalues which have a ...
ZHANG Yong-liang, ZENG Yi-cheng
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Eigenvector Analyses Show That Birch And Pine Have Similar Form In Sweden And British Columbia [PDF]
, 1965 Jöran Fries
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