Results 11 to 20 of about 24,793 (234)
Hadamard products of linear spaces
Journal of Algebra, 2016 18 pages. v2: Added Corollary 6.10 for reciprocal linear spaces, added Remark 2.6, updated references.
Bocci, Cristiano +2 more
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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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Hadamard products of hypersurfaces
Journal of Pure and Applied Algebra, 2022 12 ...
Cristiano Bocci, Enrico Carlini
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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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Minkowski sums and Hadamard products of algebraic varieties [PDF]
, 2017 We study Minkowski sums and Hadamard products of algebraic varieties. Specifically we explore when these are varieties and examine their properties in terms of those of the original varieties.Comment: 25 pages, 7 ...
Diane Maclagan +3 more
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Local Wick Polynomials and Time Ordered Products of Quantum Fields in Curved Spacetime [PDF]
, 2001 In order to have well defined rules for the perturbative calculation of quantities of interest in an interacting quantum field theory in curved spacetime, it is necessary to construct Wick polynomials and their time ordered products for the ...
Hollands, Stefan, Wald, Robert M.
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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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The State Space of Perturbative Quantum Field Theory in Curved Spacetimes [PDF]
, 2001 The space of continuous states of perturbative interacting quantum field theories in globally hyperbolic curved spacetimes is determined. Following Brunetti and Fredenhagen, we first define an abstract algebra of observables which contains the Wick ...
Hollands, Stefan, Ruan, Weihua
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Rational Normal Curves and Hadamard Products
Mediterranean Journal of Mathematics, 2022 AbstractGiven $$r>n$$ r > n general hyperplanes in $$\mathbb P^n,$$ P n ,
Carlini, Enrico +3 more
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