Results 41 to 50 of about 5,807,139 (254)

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
doaj   +1 more source

Constructions of complex hadamard matrices via tiling abelian groups [PDF]

, 2007
Applications in quantum information theory and quantum tomography have raised current interest in complex Hadamard matrices. In this note we investigate the connection between tiling of Abelian groups and constructions of complex Hadamard matrices ...
Matolcsi, Máté, Szöllősi, Frerenc, Réffy, Júlia   +2 more
core   +1 more source

Optical full Hadamard matrix multiplexing and noise effects: errata [PDF]

, 2011
The model for Poisson random noise under Hadamard multiplexing is revised. The new model accounts for the variation of the Hadamard multiplexed measurements, as well as the previously considered variation due to Poisson fluctuations.
Streeter, Lee, G. R. Burling-Claridge, M. J. Cree, Burling-Claridge, G. Robert, Cree, Michael J., Streeter, Lee V., L. Streeter   +6 more
core   +1 more source

Sharp Inequalities of Ostrowski Type for Convex Functions Defined on Linear Spaces and Application [PDF]

, 2007
An Ostrowski type inequality for convex functions defined on linear spaces is generalised. Some inequalities which improve the Hermite–Hadamard type inequality for convex functions defined on linear spaces are derived using the obtained result.
Cerone, P., Dragomir, S.S., Dragomir, Sever S, Cerone, Pietro, Kikianty, Eder   +4 more
core   +1 more source

Generalizations of Hadamard Products of Functions with Negative Coefficients [PDF]

, 1996
Let T(n) be the class of functions with negative coefficients which are analytic in the unit disk U. For functionsf1(z) andf2(z) belonging to T(n), generalizations of the Hadamard product off1(z) andf2(z) represented by (f1▵f2)(p,q;z) are introduced.
J. Choi, Yong Chan Kim, S. Owa
semanticscholar   +2 more sources

Total positivity of sums, Hadamard products and Hadamard powers: Results and counterexamples [PDF]

, 2016
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 ≥ r − 2 .
Shaun M. Fallat, Charles R. Johnson, A. Sokal   +2 more
semanticscholar   +1 more source

Hadamard products and QK spaces [PDF]

, 2008
Let f(z)=∑n=0∞anzn and g(z)=∑n=0∞bnzn be analytic in the unit disk. The Hadamard product of f and g is defined by f∗g(z)=∑n=0∞anbnzn.
Zhang, Yanhua, Wulan, Hasi
core   +1 more source

Hadamard Products of Linear Spaces [PDF]

, 2015
We describe properties of Hadamard products of algebraic varieties. We show any Hadamard power of a line is a linear space, and we construct star configurations from products of collinear points.
C. Bocci, E. Carlini, Joe Kileel
semanticscholar   +1 more source

Narrower eigenbounds for Hadamard products [PDF]

, 1997
The Schur theorem, established in 1911, defines the global bounds for all eigenvalues of Hadamard products of positive semidefinite matrices.
Im, Eric Iksoon, Eric Iksoon Im
core   +1 more source

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
doaj   +1 more source