Results 11 to 20 of about 4,790,611 (321)

Frame-Related Sequences in Chains and Scales of Hilbert Spaces

open access: yesAxioms, 2022
Frames for Hilbert spaces are interesting for mathematicians but also important for applications in, e.g., signal analysis and physics. In both mathematics and physics, it is natural to consider a full scale of spaces, and not only a single one.
Peter Balazs   +2 more
doaj   +1 more source

Rigged Hilbert spaces and contractive families of Hilbert spaces [PDF]

open access: yesMonatshefte für Mathematik, 2010
15 pages.
BELLOMONTE, Giorgia, TRAPANI, Camillo
openaire   +3 more sources

Fuzzy Hilbert Spaces [PDF]

open access: yesEngineering and Technology Journal, 2010
we introduce the definition of afuzzy inner product space and discuss someproperties of this space,and we use the definition of fuzzy inner product space tointroduced anew definitions such that the definition of fuzzy Hilbert space ,Fuzzyconvergence ...
Jehad R.Kider, Ragahad Ibrahaim Sabre
doaj   +1 more source

Hilbert spaces

open access: yes, 2022
Abstract Chapter 8 continues the study of Hilbert spaces that was started with the discussion about the topic presented in Chapter 1. It begins by introducing and explaining the central notions that surround orthonormal sets and orthonormal bases, and continues with describing aspects of projections.
Shmuel Kantorovitz, Ami Viselter
  +6 more sources

Generalized Cauchy–Schwarz Inequalities and A-Numerical Radius Applications

open access: yesAxioms, 2023
The purpose of this research paper is to introduce new Cauchy–Schwarz inequalities that are valid in semi-Hilbert spaces, which are generalizations of Hilbert spaces.
Najla Altwaijry   +2 more
doaj   +1 more source

Approximation of the Hilbert transform in the Lebesgue spaces

open access: yesJournal of Numerical Analysis and Approximation Theory, 2023
The Hilbert transform plays an important role in the theory and practice of signal processing operations in continuous system theory because of its relevance to such problems as envelope detection and demodulation, as well as its use in relating the ...
Rashid Aliev, Lale Alizade
doaj   +1 more source

Quasi-inner product spaces of quasi-Sobolev spaces and their completeness

open access: yesIbn Al-Haitham Journal for Pure and Applied Sciences, 2018
      Sequences spaces  , m  ,  p  have called quasi-Sobolev spaces were  introduced   by Jawad . K. Al-Delfi in 2013  [1]. In this  paper , we deal with notion of  quasi-inner product  space  by using concept of  quasi-normed  space which is ...
Jawad Kadhim Khalaf Al-Delfi
doaj   +1 more source

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. G.   +2 more
openaire   +3 more sources

Hilbert-generated spaces

open access: yesJournal of Functional Analysis, 2003
A Banach space \(X\) is called \(\mathcal P\)-generated (where \(\mathcal P\) is a property of Banach spaces) if there is a Banach space \(Y\) with property \(\mathcal P\) and a continuous linear operator from \(Y\) into \(X\) with dense range. \textit{M. Fabian}, \textit{G. Godefroy} and \textit{V. Zizler} [Isr. J. Math.
Fabian, M.   +3 more
openaire   +2 more sources

About the Legendre type operators [PDF]

open access: yesE3S Web of Conferences, 2021
The article considers Legendre type operators acting in the corresponding weight separable Hilbert spaces. The choice of these spaces is due to the fact that these operators preserve all properties of the Legendre operator acting on L2 (-1,1).
Maleko Evgeny
doaj   +1 more source

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