Results 61 to 70 of about 20,498 (195)

An algorithm for the split-feasibility problems with application to the split-equality problem

Journal of Inequalities and Applications, 2017
In this paper, we study the split-feasibility problem in Hilbert spaces by using the projected reflected gradient algorithm. As applications, we study the convex linear inverse problem and the split-equality problem in Hilbert spaces, and we give new ...
Chih-Sheng Chuang, Chi-Ming Chen
doaj   +1 more source

Harmonic blending approximation

Journal of Numerical Analysis and Approximation Theory, 2001
The concept of harmonic Hilbert space \(H_D({\mathbb R} ^n)\) was introduced in [2] as an extension of periodic Hilbert spaces [1], [2], [5], [6]. In [4] we introduced multivariate harmonic Hilbert spaces and studied approximation by exponential-type ...
Franz-Jürgen Delvos
doaj   +2 more sources

Fixed points in countably Hilbert spaces

Journal of Inequalities and Applications, 2016
Studying fixed points of nonlinear mappings in Hilbert spaces is of paramount importance (see, e.g., (Browder and Petryshyn in J. Math. Anal. Appl. 20:197-228, 1967)).
Nashat Faried, Hany A El-Sharkawy
doaj   +1 more source

Tomography in Hilbert spaces

Journal of Physics: Conference Series, 2007
We present a method of constructing the tomographic probability distributions describing quantum states in parallel with density operators in abstract Hilbert spaces. After the study of an infinite dimensional example, the well known Husimi-Kano quasi-distribution is reconsidered in the new setting and a new tomographic scheme based on coherent states ...
MARMO, GIUSEPPE, SIMONI, ALBERTO, VENTRIGLIA, FRANCO   +2 more
openaire   +3 more sources

Axioms for the category of Hilbert spaces. [PDF]

Proc Natl Acad Sci U S A, 2022
Heunen C, Kornell A.
europepmc   +1 more source

The ADHM-like constructions for instantons on CP2 and three-dimensional gauge theories

Nuclear Physics B, 2015
We study the moduli spaces of self-dual instantons on CP2 in a simple group G. When G is a classical group, these instanton solutions can be realized using ADHM-like constructions which can be naturally embedded into certain three-dimensional quiver ...
Noppadol Mekareeya, Diego Rodríguez-Gómez   +1 more
doaj   +1 more source

An Online Projection Estimator for Nonparametric Regression in Reproducing Kernel Hilbert Spaces. [PDF]

Stat Sin, 2023
Zhang T, Simon N.
europepmc   +1 more source

Weak Convergence Theorems on the Split Common Fixed Point Problem for Demicontractive Continuous Mappings

Journal of Function Spaces, 2018
We are concerned with the split common fixed point problem in Hilbert spaces. We propose a new method for solving this problem and establish a weak convergence theorem whenever the involved mappings are demicontractive and Lipschitz continuous.
Huanhuan Cui, Luchuan Ceng, Fenghui Wang
doaj   +1 more source

Geometric fluctuation of conformal Hilbert spaces and multiple graviton modes in fractional quantum Hall effect. [PDF]

Nat Commun, 2023
Yuzhu W, Bo Y.
europepmc   +1 more source

Notes on the factorisation of the Hilbert space for two-sided black holes in higher dimensions

Journal of High Energy Physics
In this paper, we investigate the Hilbert space factorisation problem of two-sided black holes in high dimensions. We demonstrate that the Hilbert space of two-sided black holes can be factorized into the tensor product of two one-sided bulk Hilbert ...
Pan Li
doaj   +1 more source