نتایج جستجو برای: dual frames

تعداد نتایج: 211845  

Journal: :wavelets and linear algebra 0
arash ghaani farashahi university of vienna

this article presents an analytic approach to study admissibility conditions related to classical full wavelet systems over finite fields using tools from computational harmonic analysis and theoretical linear algebra. it is shown that for a large class of non-zero window signals (wavelets), the generated classical full wavelet systems constitute a frame whose canonical dual are classical full ...

2017
GITTA KUTYNIOK VICTORIA PATERNOSTRO FRIEDRICH PHILIPP G. KUTYNIOK V. PATERNOSTRO

Fusion frames, and, more generally, operator-valued frame sequences are generalizations of classical frames, which are today a standard notion when redundant, yet stable sequences are required. However, the question of stability of duals with respect to perturbations has not been satisfactorily answered. In this paper, we quantitatively measure this stability by considering the associated devia...

Journal: :Fuzzy Sets and Systems 2016
Ivo Düntsch Ewa Orlowska Clint J. van Alten

Discrete dualities are developed for n-potent MTL–algebras and for 2-potent BL–algebras. That is, classes of frames, or relational systems, are defined that serve as dual counterparts to these classes of algebras. The frames defined here are extensions of the frames that were developed for MTL– algebras in [25], [26]; the additional frame conditions required are given here and also the proofs t...

Journal: :Applied and Computational Harmonic Analysis 2004

Journal: :Advances in Computational Mathematics 2015

Journal: :Revista de la Unión Matemática Argentina 2020

Journal: :Annali di Matematica Pura ed Applicata 2021

A dual frames multiplier is an operator consisting of analysis, multiplication and synthesis processes, where the analysis are made by two in a Hilbert space, respectively. In this paper we investigate spectra some multipliers giving, particular, conditions to be at most countable. The contribution extends results available literature about Bessel with symbol decaying zero Riesz bases.

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