Results 31 to 40 of about 21,084 (200)

Adaptive Riesz Basis Decomposition For Image Search

, 2009
Publication in the conference proceedings of EUSIPCO, Glasgow, Scotland ...
Capodiferro L, CARLI, Marco, Costantini L, NERI, Alessandro, Palma V.   +4 more
openaire   +2 more sources

Equivalency Relations between Continuous g-Frames and Stability of Alternate Duals of Continuous g-Frames in Hilbert -Modules

Journal of Applied Mathematics, 2013
We introduce the modular continuous g-Riesz basis to improve one existing result for continuous g-Riesz basis in Hilbert -modules, and then we study the equivalency relations between continuous g-frames in Hilbert -modules, and, in particular, we obtain ...
Zhong-Qi Xiang
doaj   +1 more source

Linear combinations of frame generators in systems of translates [PDF]

, 2013
A finitely generated shift invariant space $V$ is a closed subspace of $L^2(\R^d)$ that is generated by the integer translates of a finite number of functions.
Cabrelli, Carlos, Mosquera, Carolina A., Paternostro, Victoria   +2 more
core   +2 more sources

The nonlocal boundary problem with perturbations of antiperiodicity conditions for the eliptic equation with constant coefficients

Karpatsʹkì Matematičnì Publìkacìï, 2018
In this article, we investigate a problem with nonlocal boundary conditions which are perturbations of antiperiodical conditions in bounded $m$-dimensional parallelepiped using Fourier method. We describe properties of a transformation operator $R:L_2(G)
Ya.O. Baranetskij, I.Ya. Ivasiuk, P.I. Kalenyuk, A.V. Solomko   +3 more
doaj   +1 more source

Riesz Basis in de Branges Spaces of Entire Functions

, 2022
In this paper we consider the problem of Riesz basis in de Branges spaces of entire functions H(E) with the condition that '(x) > 0, where is the corresponding phase function. We are concerned with the sets of real numbers { n} such that the normalized reproducing kernels k( n, .)/||k( n, .)|| satisfies the restricted isometry ...
Al-Sa'di, Sa'ud, Obiedat, Hamed M.
openaire   +1 more source

Splitting the Riesz basis condition for systems of dilated functions]{Splitting the Riesz basis condition for systems of dilated functions through Dirichlet series

, 2021
20 ...
Antezana, Jorge, Carando, Daniel, Scotti, Melisa   +2 more
openaire   +2 more sources

Riesz bases and Jordan form of the translation operator in semi-infinite periodic waveguides

, 2012
We study the propagation of time-harmonic acoustic or transverse magnetic (TM) polarized electromagnetic waves in a periodic waveguide lying in the semi-strip $(0,\infty)\times(0,L)$.
Ammari, Ehrhardt, Figotin, Figotin, Figotin, Figotin, Figotin, Figotin, Figotin, Fliss, Fliss, Gohberg, Johnson, Kuchment, Kuchment, Lions, Nazarov, Sakoda, Schulz, Sobolev, Soussi, Steinberg, Yablonovitch   +22 more
core   +1 more source

Riesz basis generation, eigenvalues distribution, and exponential stability for a euler-bernoulli beam with joint feedback control [PDF]

, 2001
Using an abstract result on Riesz basis generation for discrete operators in general Hilbert spaces, we show, in this article, that the generalized eigenfunctions of an Euler-Bernoulli beam equation ith oint linear feedback control form a Riesz basis for
Chan, K.Y., Guo, Bao-Zhu
core   +2 more sources

Three problems on exponential bases

, 2018
We consider three special and significant cases of the following problem. Let D be a (possibly unbounded) set of finite Lebesgue measure in R^d. Find conditions on D for which the standard exponential basis on the unit cube of R^d is a frame, a Riesz ...
De Carli, Laura, Mizrahi, Alberto, Tepper, Alexander   +2 more
core   +1 more source

ON COMPLETE RIESZ–FISCHER SEQUENCES IN A HILBERT SPACE

Проблемы анализа
We prove that if {𝑓_𝑛}^\infty_{n=1} is a complete Riesz–Fischer sequence in a separable Hilbert space 𝐻, then 𝑇 :={𝑓 \in 𝐻 : \Sum ...
Elias Zikkos
doaj   +1 more source