Results 41 to 50 of about 2,074 (253)

Constructions of complex hadamard matrices via tiling abelian groups

open access: yes, 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   +2 more
core   +1 more source

Optical full Hadamard matrix multiplexing and noise effects: errata

open access: yes, 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   +6 more
core   +1 more source

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

open access: yes, 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.   +4 more
core   +1 more source

A Note on Hermite-Hadamard Inequalities for Products of Convex Functions

open access: yesJournal of Applied Mathematics, 2013
We obtain some new Hermite-Hadamard type inequalities for products of convex functions. We conclude that the results obtained in this work are the refinements of the present results.
Feixiang Chen
doaj   +1 more source

Rational Normal Curves and Hadamard Products [PDF]

open access: yes, 2022
Given r> n general hyperplanes in Pn, a star configuration of points is the set of all the n-wise intersection of the hyperplanes. We introduce contact star configurations, which are star configurations where all the hyperplanes are osculating to the ...
Guardo E.   +3 more
core   +3 more sources

New Hadamard Type Inequalities for Modified h-Convex Functions

open access: yesFractal and Fractional, 2023
In this article, we demonstrated various Hermite–Hadamard and Fejér type inequalities for modified h-convex functions. We showed several inequalities for the products of two modified h-convex functions.
Daniel Breaz   +4 more
doaj   +1 more source

Neural Fields for Highly Accelerated 2D Cine Phase Contrast MRI

open access: yesAdvanced Science, EarlyView.
ABSTRACT 2D cine phase contrast (CPC) MRI provides quantitative information on blood velocity and flow within the human vasculature. However, data acquisition is time‐consuming, motivating the reconstruction of the velocity field from undersampled measurements to reduce scan times. In this work, neural fields are proposed as a continuous spatiotemporal
Pablo Arratia   +7 more
wiley   +1 more source

Weighted Hermite–Hadamard type inclusions for products of co-ordinated convex interval-valued functions

open access: yesAdvances in Difference Equations, 2021
In this paper, we establish some Hermite–Hadamard–Fejér type inclusions for the product of two co-ordinated convex interval-valued functions. These inclusions are generalizations of some results given in earlier works.
Hasan Kara   +4 more
doaj   +1 more source

Product of four Hadamard matrices

open access: yesJournal of Combinatorial Theory, Series A, 1992
The authors show the following interesting theorem on Hadamard matrices: If there exist Hadamard matrices of order \(4m\), \(4n\), \(4p\) and \(4q\), then there exists an Hadamard matrix of order \(16mnpq\).
Craigen, R.   +2 more
openaire   +2 more sources

Hadamard products and QK spaces

open access: yes, 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

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