Results 51 to 60 of about 26,670 (208)

Orthogonal diagonalization for complex skew-persymmetric anti-tridiagonal Hankel matrices

open access: yesSpecial Matrices, 2016
In this paper, we obtain an eigenvalue decomposition for any complex skew-persymmetric anti-tridiagonal Hankel matrix where the eigenvector matrix is orthogonal.
Gutiérrez-Gutiérrez Jesús   +1 more
doaj   +1 more source

Super-optimal approximation by meromorphic functions. [PDF]

open access: yes, 1996
Let G be a matrix function of type m × n and suppose that G is expressible as the sum of an H∞ function and a continuous function on the unit circle. Suppose also that the (k – 1)th singular value of the Hankel operator with symbol G is greater than the ...
Peller, V. V., Young, N. J.
core   +1 more source

On the solvability of the indefinite Hamburger moment problem

open access: yesAIMS Mathematics, 2023
In this paper, we present a new approach for the solvability of the indefinite Hamburger moment problem in the class of generalized Nevanlinna functions with a given negative index, which is more algebraic and completely different from the existing ...
Yongjian Hu, Huifeng Hao , Xuzhou Zhan
doaj   +1 more source

Computation- and Space-Efficient Implementation of SSA [PDF]

open access: yes, 2010
The computational complexity of different steps of the basic SSA is discussed. It is shown that the use of the general-purpose "blackbox" routines (e.g.
Korobeynikov, Anton
core   +1 more source

Kernel Function Definition Completion for Time–Domain State–Space Representations of Radiation Forces: Application to the Hankel Singular Value Decomposition

open access: yesJournal of Marine Science and Engineering, 2021
This paper focuses on the formulation of state–space representations of radiation forces for marine structures using Hankel Singular Value Decomposition (HSVD), a method used to obtain a state–space realization from a Hankel matrix, with the classical ...
Romain Lecuyer-Le Bris   +3 more
doaj   +1 more source

Characterizations of matrix-valued asymmetric truncated Hankel operators

open access: yesBanach Journal of Mathematical Analysis, 2023
In this paper we introduce the class of matrix valued asymmetric truncated Hankel operators. By using characterizations of matrix valued asymmetric truncated Toeplitz operators, we characterize matrix valued asymmetric truncated Hankel operators in the case when two involved inner matrices are J-symmetric.
Khan, Rewayat, Lee, Ji Eun
openaire   +2 more sources

T-S Fuzzy Model-Based Approximation and Filter Design for Stochastic Time-Delay Systems with Hankel Norm Criterion

open access: yesAbstract and Applied Analysis, 2014
This paper investigates the Hankel norm filter design problem for stochastic time-delay systems, which are represented by Takagi-Sugeno (T-S) fuzzy model.
Yanhui Li, Xiujie Zhou
doaj   +1 more source

Hankel and Toeplitz operators: continuous and discrete representations [PDF]

open access: yesOpuscula Mathematica, 2017
We find a relation guaranteeing that Hankel operators realized in the space of sequences \(\mathcal{l}^2 (\mathbb{Z}_{+})\) and in the space of functions \(L^2 (\mathbb{R}_{+})\) are unitarily equivalent.
Dmitri R. Yafaev
doaj   +1 more source

On sufficient conditions for the total positivity and for the multiple positivity of matrices [PDF]

open access: yes, 2005
The following theorem is proved: Suppose $M = (a_{i,j})$ be a $k \times k$ matrix with positive entries and $a_{i,j}a_{i+1,j+1} > 4\cos ^2 \frac{\pi}{k+1} a_{i,j+1}a_{i+1,j} \quad (1 \leq i \leq k-1, 1 \leq j \leq k-1).$ Then $\det M > 0 .$ The ...
Katkova, Olga M., Vishnyakova, Anna M.
core   +2 more sources

Analytic determinants and inverses of Toeplitz and Hankel tridiagonal matrices with perturbed columns

open access: yesSpecial Matrices, 2020
In this paper, our main attention is paid to calculate the determinants and inverses of two types Toeplitz and Hankel tridiagonal matrices with perturbed columns.
Fu Yaru   +3 more
doaj   +1 more source

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