Results 1 to 10 of about 239 (169)
On the Properties of r-Circulant Matrices Involving Generalized Fermat Numbers
Sakarya Üniversitesi Fen Bilimleri Enstitüsü Dergisi, 2023 -circulant matrices have applied in numerical computation, signal processing, coding theory, etc. In this study, our main goal is to investigate the r-circulant matrices of generalized Fermat numbers which are shown by We obtain the eigenvalues ...
Engin Özkan, Engin Eser, Bahar Kuloǧlu
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Harmonized-Multinational qEEG norms (HarMNqEEG)
NeuroImage, 2022 This paper extends frequency domain quantitative electroencephalography (qEEG) methods pursuing higher sensitivity to detect Brain Developmental Disorders.
Min Li +38 more
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On the Norms of RFMLR-Circulant Matrices with the Exponential and Trigonometric Functions
Journal of Mathematics, 2021 In this paper, based on combinatorial methods and the structure of RFMLR-circulant matrices, we study the spectral norms of RFMLR-circulant matrices involving exponential forms and trigonometric functions.
Baijuan Shi
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Bounds for spectral projectors on the Euclidean cylinder
Comptes Rendus. Mathématique, 2022 We prove essentially optimal bounds for norms of spectral projectors on thin spherical shells for the Laplacian on the cylinder $(\mathbb{R} / \mathbb{Z}) \times \mathbb{R}$. In contrast to previous investigations into spectral projectors on tori, having
Germain, Pierre, Myerson, Simon
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Universal Journal of Mathematics and Applications, 2020 In this study, we obtain upper and lower bounds for the spectral norms of the geometric circulant matrices with the bi--periodic Fibonacci numbers and bi--periodic Lucas numbers, respectively.
Emrah Polatlı
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On the bounds for the spectral norms of geometric circulant matrices
Journal of Inequalities and Applications, 2016 In this paper, we define a geometric circulant matrix whose entries are the generalized Fibonacci numbers and hyperharmonic Fibonacci numbers. Then we give upper and lower bounds for the spectral norms of these matrices.
Can Kızılateş, Naim Tuglu
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Matrix biorthogonal polynomials on the real line: Geronimus transformations [PDF]
Bulletin of Mathematical Sciences, 2019 In this paper, Geronimus transformations for matrix orthogonal polynomials in the real line are studied. The orthogonality is understood in a broad sense, and is given in terms of a nondegenerate continuous sesquilinear form, which in turn is determined ...
Gerardo Ariznabarreta +3 more
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The spectral norms of geometric circulant matrices with the generalized k-Horadam numbers
Journal of Inequalities and Applications, 2018 In this paper, we use the algebra methods, the properties of the r-circulant matrix and the geometric circulant matrix to study the upper and lower bound estimate problems for the spectral norms of a geometric circulant matrix involving the generalized k-
Baijuan Shi
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On the closed subfields of Q¯~p${\tilde{\bar Q}}_p$
Open Mathematics, 2016 Let p be a prime number, and let Q¯~p$\bf{\tilde{\bar {\text Q}}}_p$ be the completion of Q with respect to the pseudovaluation w which extends the p-adic valuation vp. In this paper our goal is to give a characterization of closed subfields of Q¯~p$\bf{\
Achimescu Sever +2 more
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Pseudospectral method for semilinear partial functional differential equations [PDF]
Opuscula Mathematica, 2010 We present a convergence result for two spectral methods applied to an initial boundary value problem with functional dependence of Volterra type. Explicit condition of Courant-Friedrichs-Levy type is assumed on time step \(\tau \) and the number \(N ...
Wojciech Czernous
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