Results 21 to 30 of about 2,074 (253)
Mathematics, 2022 Many authors have recently examined the relationship between symmetry and generalized convexity. Generalized convexity and symmetry have become a new area of study in the field of inequalities as a result of this close relationship.
Gustavo Santos-García +4 more
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Spectral Decomposition of Gramians of Continuous Linear Systems in the Form of Hadamard Products
Mathematics, 2023 New possibilities of Gramian computation, by means of canonical transformations into diagonal, controllable, and observable canonical forms, are shown. Using such a technique, the Gramian matrices can be represented as products of the Hadamard matrices ...
Igor Yadykin
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A quadratic bilinear equation arising from the quadratic dynamical system [PDF]
Proceedings of the Estonian Academy of Sciences, 2021 A quadratic dynamical system with practical applications is taken into consideration. This system is transformed into a new bilinear system with Hadamard products by means of the implicit matrix structure. The corresponding quadratic bilinear equation is
Bo Yu, Ning Dong, Qiong Tang
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Projective surfaces not as Hadamard products and the dimensions of the Hadamard joins
Journal of Pure and Applied AlgebraWe study the dimensions of Hadamard products of $k\ge 3$ varieties if we allow to modify $k-1$ of them by the action of a general projective linear transformation. We also prove that the join of a variety not contained in a coordinate hyperplane with a ``nice'' curve always has the expected dimension.
Ballico, Edoardo
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The closure property of H $\mathcal{H}$ -tensors under the Hadamard product
Journal of Inequalities and Applications, 2017 In this paper, we investigate the closure property of H $\mathcal {H}$ -tensors under the Hadamard product. It is shown that the Hadamard products of Hadamard powers of strong H $\mathcal{H}$ -tensors are still strong H $\mathcal{H}$ -tensors.
Lixin Zhou, Jianzhou Liu, Li Zhu
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On Hadamard products of linear varieties [PDF]
Journal of Algebra and Its Applications, 2016 In this paper, we address the Hadamard product of linear varieties not necessarily in general position. In [Formula: see text], we obtain a complete description of the possible outcomes. In particular, in the case of two disjoint finite sets [Formula: see text] and [Formula: see text] of collinear points, we get conditions for [Formula: see text] to ...
Bocci Cristiano +3 more
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Hadamard products in F(p,q,s) spaces
Journal of Function Spaces and Applications, 2010 We characterize coefficient multipliers from X to F(p, q, s), 0 < s < ∞, where X is either the Hardy space H1 or F(p, q, s).
Jizhen Zhou
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Frequency-difference sparse Bayesian learning for unambiguous direction-of-arrival estimation [PDF]
JASA Express LettersThe frequency-difference (FD) method uses the FD Hadamard product, comprising auto-products to model below-band acoustic fields and unintended cross-products, for efficient direction-of-arrival (DOA) estimation under spatial aliasing.
Ze Yuan +3 more
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Construction of Sylvester-Hadamard Matrices by Using Binary Code [PDF]
مجلة جامعة الانبار للعلوم الصرفة, 2009 A simple method is presented which defines Sylvester-Hadamard matrices in terms of products of binary code. This method is based representation of natural number as binary code which take only two value 0 or 1.
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Advances in Difference Equations, 2020 We introduce new operators, the so-called left and right generalized conformable fractional integral operators. By using these operators we establish new Hermite–Hadamard inequalities for s-convex functions and products of two s-convex functions in the ...
Artion Kashuri +4 more
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