Results 21 to 30 of about 20,498 (195)

TEOREMA REPRESENTASI RIESZ–FRECHET PADA RUANG HILBERT

open access: yesBarekeng, 2011
Hilbert space is a very important idea of the Davids Hilbert invention. In 1907, Riesz and Fréchet developed one of the theorem in Hilbert space called the Riesz-Fréchet representation theorem.
Mozart W. Talakua, Stenly J. Nanuru
doaj   +1 more source

New Results on Boas–Bellman-Type Inequalities in Semi-Hilbert Spaces with Applications

open access: yesAxioms, 2023
In this article, we investigate new findings on Boas–Bellman-type inequalities in semi-Hilbert spaces. These spaces are generated by semi-inner products induced by positive and positive semidefinite operators.
Najla Altwaijry   +2 more
doaj   +1 more source

Woven g-Fusion Frames in Hilbert Spaces [PDF]

open access: yesSahand Communications in Mathematical Analysis, 2021
In this paper, we introduce the notion of woven g-fusion frames in Hilbert spaces. Then, we present sufficient conditions for woven g-fusion frames in terms of woven frames in Hilbert spaces.
Maryam Mohammadrezaee   +3 more
doaj   +1 more source

Regularization Method for the Approximate Split Equality Problem in Infinite-Dimensional Hilbert Spaces

open access: yesAbstract and Applied Analysis, 2013
We studied the approximate split equality problem (ASEP) in the framework of infinite-dimensional Hilbert spaces. Let , , and   be infinite-dimensional real Hilbert spaces, let and   be two nonempty closed convex sets, and let and   be two bounded ...
Rudong Chen, Junlei Li, Yijie Ren
doaj   +1 more source

On the quantumness of a Hilbert space [PDF]

open access: yesQuantum Information and Computation, 2004
We derive an exact expression for the quantumness of a Hilbert space (defined in C.A. Fuchs and M. Sasaki, Quant. Info. Comp. {\bf 3}, 377 (2003)), and show that in composite Hilbert spaces the signal states must contain at least some entangled states in order to achieve such a sensitivity.
openaire   +3 more sources

On Fuzzy Co-Pre-Hilbert Spaces

open access: yesJournal of Kufa for Mathematics and Computer, 2013
This paper introduces the concepts fuzzy pre-Hilbert spaces and fuzzy co-pre-Hilbert spaces and proves some theorems in this subject. 
Noori F. Al-Mayahi, Intisar H. Radhi
doaj   +1 more source

Is Hilbert space discrete?

open access: yesPhysics Letters B, 2005
We show that discretization of spacetime naturally suggests discretization of Hilbert space itself. Specifically, in a universe with a minimal length (for example, due to quantum gravity), no experiment can exclude the possibility that Hilbert space is discrete. We give some simple examples involving qubits and the Schrodinger wavefunction, and discuss
Roman V. Buniy   +2 more
openaire   +3 more sources

Bayes Hilbert Spaces

open access: yesAustralian & New Zealand Journal of Statistics, 2014
SummaryA Bayes linear space is a linear space of equivalence classes of proportional σ‐finite measures, including probability measures. Measures are identified with their density functions. Addition is given by Bayes' rule and substraction by Radon–Nikodym derivatives. The present contribution shows the subspace of square‐log‐integrable densities to be
Boogaart, K. Gerald van den   +2 more
openaire   +3 more sources

One result on boundedness of the Hilbert transform in Marcinkiewics spaces

open access: yesВестник КазНУ. Серия математика, механика, информатика, 2022
In mathematics and in signal theory, the Hilbert transform is an important linear operator that takes a real-valued function and produces another real-valued function.
Nurken Tursynbayuly Bekbayev   +1 more
doaj   +1 more source

Application of symmetric analytic functions to spectra of linear operators

open access: yesKarpatsʹkì Matematičnì Publìkacìï, 2021
The paper is devoted to extension of the theory of symmetric analytic functions on Banach sequence spaces to the spaces of nuclear and $p$-nuclear operators on the Hilbert space.
I. Burtnyak   +4 more
doaj   +1 more source

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