Results 31 to 40 of about 660,488 (250)

On Frames in Hilbert Modules Over Locally C∗-Algebras

open access: yesInternational Journal of Analysis and Applications, 2023
Frame is a fundamental notion in the study of vector spaces; they offer redundancy and flexibility, which favor their application in various fields of mathematics. This article aims to collect important results of frames in Hibert pro-C∗-modules: Frame, ∗
Roumaissae El Jazzar, Rossafi Mohamed
doaj   +1 more source

On some properties of continuous g-frames and Riesz-type continuous g-frames

open access: yesIndian Journal of Pure and Applied Mathematics, 2016
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Abdollahpour, Mohammad Reza   +1 more
openaire   +1 more source

Controlled G-Frames and Their G-Multipliers in Hilbert spaces

open access: yesAnalele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2013
Multipliers have been recently introduced by P. Balazs as operators for Bessel sequences and frames in Hilbert spaces. These are opera- tors that combine (frame-like) analysis, a multiplication with a fixed sequence ( called the symbol) and synthesis ...
Rahimi Asghar, Fereydooni Abolhassan
doaj   +1 more source

A new technique for evaluating mesospheric momentum balance utilizing radars and satellite data [PDF]

open access: yesAnnales Geophysicae, 2000
A new method for evaluating momentum balance in the mesosphere using radar and satellite data is presented. This method is applied to radar wind data from two medium frequency installations (near Adelaide, Australia and Christchurch, New Zealand) and ...
D. J. Frame   +6 more
doaj   +1 more source

Some relationship between G-frames and frames [PDF]

open access: yesSahand Communications in Mathematical Analysis, 2015
In this paper we proved that every g-Riesz basis for Hilbert space $H$ with respect to $K$ by adding a condition is a Riesz basis for Hilbert $B(K)$-module $B(H,K)$. This is an extension of [A. Askarizadeh,M. A.
Mehdi Rashidi-Kouchi, Akbar Nazari
doaj  

Controlled K−g−Fusion Frames in Hilbert C∗−Modules

open access: yesInternational Journal of Analysis and Applications, 2022
Controlled frames have been the subject of interest because of its ability to improve the numerical efficiency of iterative algorithms for inverting the frame operator.
Mohamed Rossafi, Fakhr-dine Nhari
doaj   +1 more source

Knowledge and attitudes relating to condoms on the part of African High School children around Johannesburg

open access: yesCurationis, 1991
Senior high school children completed a self-administered questionnaire on sexual activity, knowledge of family planning methods, condoms and use of condoms.
G. Frame, P. Ferrinho, C. Evian
doaj   +1 more source

Eigenvalues and eigenvectors for a $G$-frame operator

open access: yesHacettepe Journal of Mathematics and Statistics, 2020
In this paper, we investigate eigenvalues and eigenvectors of the $g$-frame operator of $\{\Lambda_jP\in B(K,H_j):j\in\mathbb{J}\}$, where $\{\Lambda_j\in B(H,H_j): j\in\mathbb{J}\}$ is a $g$-frame for an $N$-dimensional Hilbert space $H$ and $P$ is a rank $k$ orthogonal projection of $H$ onto $K,$ a closed subspace of $H$.******************************
Azam YOUSEFZADEHEYNİ   +1 more
openaire   +4 more sources

Integrated science for environmental decision-making: the challenge for biodiversity and ecosystem informatics

open access: yesData Science Journal, 2006
Information concerning biodiversity and ecosystems is critical to a wide range of scientific, educational, and government uses; however, much of this information is not easily accessible.
G Cotter, M Frame, R Sepic
doaj   +1 more source

K-g-Duals in Hilbert C∗-Modules

open access: yesInternational Journal of Analysis and Applications, 2022
Generalized frames with adjointable operators called K-g-frame is a generalization of a g-frame. In this paper, we give some results of dual K-g-bessel sequence, finally we obtain a new properties of approximate K-g-duals in Hilbert C∗-module.
Mohamed Rossafi, Fakhr-dine Nhari
doaj   +1 more source

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