Results 81 to 90 of about 54,740 (185)
On the Generalization of a Class of Harmonic Univalent Functions Defined by Differential Operator
Mathematics, 2018 In this article, a new class of harmonic univalent functions, defined by the differential operator, is introduced. Some geometric properties, like, coefficient estimates, extreme points, convex combination and convolution (Hadamard product) are obtained.
Aqeel Ketab AL-khafaji +2 more
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Hadamard products and BPS networks
Journal of High Energy PhysicsWe study examples of fourth-order Picard-Fuchs operators that are Hadamard products of two second-order Picard-Fuchs operators. Each second-order Picard-Fuchs operator is associated with a family of elliptic curves, and the Hadamard product computes ...
Mohamed Elmi
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Total positivity of Hadamard products
Journal of Mathematical Analysis and Applications, 1992 The Hadamard product of two totally positive Toeplitz matrices \(M\) and \(N\) need not be totally positive. When only finitely many diagonals of \(M\) and \(N\) are nonzero, preservation of total positivity by Hadarmard product is a theorem of Maló. The author establishes another sufficient condition for the preservation of total positivity: if \(M ...
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Total positivity of sums, Hadamard products and Hadamard powers: Results and counterexamples
Linear Algebra and its Applications, 2017 We show that, for Hankel matrices, total nonnegativity (resp. total positivity) of order r is preserved by sum, Hadamard product, and Hadamard power with real exponent t \ge r-2. We give examples to show that our results are sharp relative to matrix size and structure (general, symmetric or Hankel).
Fallat, S, Johnson, CR, Sokal, AD
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Inequalities of Furuta and Mond–Pečarić on the Hadamard product
Journal of Inequalities and Applications, 2000 As a continuation of (J. Mičić, Y. Seo, S.-E. Takahasi and M. Tominaga, Inequalities of Furuta and Mond–Pečarić, Math. Ineq. Appl., 2 (1999), 83–111), we shall discuss complementary results to Jensen's type inequalities ...
Takahasi Sin-El +3 more
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White Manin product and Hadamard product
In this paper, we consider three types of operads: alternative, assosymmetric, and bicommutative. We prove that the Hadamard product of these operads with the Novikov operad coincides with their white Manin product. As an application, we identify a variety of algebras in which all algebras are special.
Kolesnikov, P. S., Sartayev, B. K.
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Majorization relations for Hadamard products
Linear Algebra and its Applications, 1995 \textit{C. R. Johnson} and \textit{R. B. Bapat} [Linear Algebra Appl. 104, 246- 247 (1988)] have conjectured that: if \(A\) and \(B\) are \(n \times n\) positive definite matrices with Hadamard product \(A \circ B\) then, for each \(k \leq n\), the product of the \(k\) smallest of the eigenvalues of \(A \circ B\) is at least as great as the product of ...
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Hankel Tensors: Associated Hankel Matrices and Vandermonde Decomposition
, 2014 Hankel tensors arise from applications such as signal processing. In this paper, we make an initial study on Hankel tensors. For each Hankel tensor, we associate it with a Hankel matrix and a higher order two-dimensional symmetric tensor, which we call ...
Qi, Liqun
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Narrower eigenbounds for Hadamard products
Linear Algebra and its Applications, 1997 The author considers the Hadamard product of two positive semidefinite matrices of order \(n\). An ``augmented'' Schur theorem is proved which yields a specific bound for each eigenvalue of the Hadamard product. The result improves the classical global bounds by \textit{I.
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Strongly MφMψ -Convex Functions, The Hermite–Hadamard–Fejér Inequality and Related Results
Annales Mathematicae SilesianaeWe present Hermite–Hadamard–Fejér type inequalities for strongly MφMψ -convex functions. Some refinements of them and bounds for the integral mean of the product of two functions are also obtained.
Bombardelli Mea, Varošanec Sanja
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