Results 21 to 30 of about 5,414 (291)

Introducing the kernel descent optimizer for variational quantum algorithms [PDF]

open access: yesScientific Reports
In recent years, variational quantum algorithms have garnered significant attention as a candidate approach for near-term quantum advantage using noisy intermediate-scale quantum (NISQ) devices.
Lars Simon, Holger Eble, Manuel Radons
doaj   +2 more sources

Some reproducing kernel spaces of continuous functions

open access: yesJournal of Mathematical Analysis and Applications, 1991
The author proves that a complex matrix valued symmetric \(C^ 3\)- function \(K:(a,b)\times(a,b)\to{\mathfrak M}(n,\mathbb{C})\) is the reproducing kernel of a Krejn space of continuous functions.
Alpay, Daniel
core   +6 more sources

Approximating Reproducing Kernel Hilbert Space Functions by Bernstein Operators

open access: yesResults in Mathematics
AbstractMotivated by kernel methods in machine learning theory, we study the uniform approximation of functions from reproducing kernel Hilbert spaces by Bernstein operators. Rates of approximation are provided in terms of the function norm in the reproducing kernel Hilbert space.
Han Feng, Sonia Y W Hui, Ruohan Shen
exaly   +3 more sources

On solutions of fractional order time varying linear dynamical systems model

open access: yesArab Journal of Basic and Applied Sciences, 2021
In this paper, the linear and nonlinear fractional order time varying linear dynamical systems model has been studied. The homotopy perturbation method is used to find the approximation solution.
Mahmut Modanli, Ali Akgül
doaj   +1 more source

New reproducing kernel functions in the reproducing kernel Sobolev spaces

open access: yesAIMS Mathematics, 2020
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Akgul, Ali   +2 more
openaire   +3 more sources

Reproducing Kernel Hilbert Spaces of Smooth Fractal Interpolation Functions

open access: yesFractal and Fractional, 2023
The theory of reproducing kernel Hilbert spaces (RKHSs) has been developed into a powerful tool in mathematics and has lots of applications in many fields, especially in kernel machine learning.
Dah-Chin Luor, Liang-Yu Hsieh
doaj   +1 more source

EQUIVALENT CONDITIONS FOR THE EXISTENCE OF UNCONDITIONAL BASES OF REPRODUCING KERNELS IN SPACES OF ENTIRE FUNCTIONS

open access: yesПроблемы анализа, 2021
We consider a reproducing kernel radial Hilbert space of entire functions and prove the equivalence of several sufficient conditions for the existence of unconditional bases of reproducing kernels in such spaces.
K. P. Isaev, R. S. Yulmukhametov
doaj   +1 more source

On functional reproducing kernels

open access: yesOpen Mathematics, 2023
Abstract We show that even if a Hilbert space does not admit a reproducing kernel, there could still be a kernel function that realizes the Riesz representation map. Constructions in spaces that are the Fourier transform of weighted
openaire   +3 more sources

Cyclicity in Reproducing Kernel Hilbert Spaces of Analytic Functions [PDF]

open access: yesComputational Methods and Function Theory, 2014
We introduce a large family of reproducing kernel Hilbert spaces $\mathcal{H} \subset \mbox{Hol}(\mathbb{D})$, which include the classical Dirichlet-type spaces $\mathcal{D}_α$, by requiring normalized monomials to form a Riesz basis for $\mathcal{H}$. Then, after precisely evaluating the $n$-th optimal norm and the $n$-th approximant of $f(z)=1-z$, we
Fricain, Emmanuel   +2 more
openaire   +4 more sources

Inner Functions in Reproducing Kernel Spaces [PDF]

open access: yes, 2019
In this paper we explore the notion of inner function in a broader context of operator theory.
Cheng, Raymond   +2 more
openaire   +2 more sources

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