Results 1 to 10 of about 42 (42)

Some new results on the weaving of K-g-frames in Hilbert spaces

Open Mathematics, 2021
In this paper, we provide some conditions for a K-woven pair of K-g-frames to be preserved under an operator and particularly, we report that applying two different operators to a K-woven pair of K-g-frames can leave them K-woven.
Xiang Zhong-Qi
doaj   +1 more source

Controlled K-Fusion Frame for Hilbert Spaces

Moroccan Journal of Pure and Applied Analysis, 2021
K-fusion frames are a generalization of fusion frames in frame theory. In this paper, we extend the concept of controlled fusion frames to controlled K-fusion frames, and we develop some results on the controlled K-fusion frames for Hilbert spaces, which
Assila Nadia, Kabbaj Samir, Moalige Brahim   +2 more
doaj   +1 more source

Instantaneous Frequency-Embedded Synchrosqueezing Transform for Signal Separation

Frontiers in Applied Mathematics and Statistics, 2022
The synchrosqueezing transform (SST) and its variants have been developed recently as an alternative to the empirical mode decomposition scheme to model a non-stationary signal as a superposition of amplitude- and frequency-modulated Fourier-like ...
Qingtang Jiang, Ashley Prater-Bennette, Bruce W. Suter, Abdelbaset Zeyani   +3 more
doaj   +1 more source

Relay fusion frames in Banach spaces

Open Mathematics, 2023
The relay fusion frames have been recently introduced in Hilbert spaces to model sensor relay networks and distributed sensor relay systems, which are deeply connected with compressed sensing.
Hong Guoqing, Li Pengtong
doaj   +1 more source

OPTIMAL LINE PACKINGS FROM FINITE GROUP ACTIONS

Forum of Mathematics, Sigma, 2020
We provide a general program for finding nice arrangements of points in real or complex projective space from transitive actions of finite groups. In many cases, these arrangements are optimal in the sense of maximizing the minimum distance.
JOSEPH W. IVERSON, JOHN JASPER, DUSTIN G. MIXON   +2 more
doaj   +1 more source

Controlled Continuous g-Frames in Hilbert C*-Modules

Moroccan Journal of Pure and Applied Analysis, 2020
Frame Theory has a great revolution in recent years. This Theory have been extended from Hilbert spaces to Hilbert C*-modules. The purpose of this paper is the introduction and the study of the concept of Controlled Continuous g-Frames in Hilbert C ...
Kabbaj S., Labrigui H., Touri A.
doaj   +1 more source

Two-channel sampling in wavelet subspaces

Analele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2015
We develop two-channel sampling theory in the wavelet subspace V1 from the multi resolution analysis {Vj}j∈𝕫. Extending earlier results by G. G. Walter [11], W. Chen and S. Itoh [2] and Y. M.
Kim J.M., Kwon K.H.
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New forms of bilateral inequalities for K-g-frames

Demonstratio Mathematica
In this work, several bilateral inequalities for KK-gg-frames in subspaces are established, drawing support from two kinds of operators induced, respectively, by the KK-gg-frame itself and the KK-dual pair, which, compared with previous ones concerning ...
Xiang Zhong-Qi
doaj   +1 more source

Quantum injectivity of G-frames in Hilbert spaces

Demonstratio Mathematica
Inspired by some recent work on the quantum detection problem by discrete frames and continuous frames, in this article, we examine the quantum detection problem with G-frames.
Hong Guoqing, Wan Linbin, Zhang Jianxia
doaj   +1 more source

On the relation of the frame-related operators of fusion frame systems. [PDF]

Sampl Theory Signal Process Data Anal, 2023
Köhldorfer L, Balazs P.
europepmc   +1 more source