Results 21 to 30 of about 282,423 (243)

K-g-fusion frames in Hilbert spaces

Journal of Inequalities and Applications, 2020
K-g-fusion frames are generalizations of fusion frames, K-fusion frames and g-fusion frames. In this paper, we present some new characterizations of K-g-fusion frames and tight K-g-fusion frames, and give several properties of K-g-fusion frames by means ...
Yongdong Huang, Yuanyuan Yang
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On Weaving g-Frames for Hilbert Spaces [PDF]

Complex Analysis and Operator Theory, 2020
Weaving frames are powerful tools in wireless sensor networks and pre-processing signals. In this paper, we introduce the concept of weaving for g-frames in Hilbert spaces. We first give some properties of weaving g-frames and present two necessary conditions in terms of frame bounds for weaving g-frames.
Li, Dongwei, Leng, Jinsong, Huang, Tingzhu, Li, Xiaoping   +3 more
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Some New Inequalities for Dual Continuous g-Frames

Mathematics, 2019
In the present paper, we establish new inequalities for dual continuous generalized frames by adopting operator methods. The inequalities are parameterized by the parameter λ ∈ R .
Yanling Fu, Wei Zhang
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Characterizing the R-duality of g-frames

Journal of Inequalities and Applications, 2019
In this paper, we define the g-Riesz-dual of a given special operator-valued sequence with respect to g-orthonormal bases for a separable Hilbert space.
Liang Li, Pengtong Li
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Similar generalized frames [PDF]

Sahand Communications in Mathematical Analysis, 2018
Generalized frames are an extension of frames in Hilbert  spaces and  Hilbert $C^*$-modules. In this paper, the concept ''Similar" for modular $g$-frames is introduced and all of operator duals (ordinary duals) of similar $g$-frames with respect to each ...
Azadeh Alijani
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Computable g- Frames

CoRR, 2016
The notion of g-frames for Hilbert spaces was introduced and studied by Wenchang Sun [16] as a generalization of the notion of frames. In this paper, we define computable g-frames in computable Hilbert spaces and obtain computable versions of some of their characterizations and related results.
Poonam Mantry, Shiv Kumar Kaushik
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Generalized Phase (Norm) Retrieval Hermitian Matrices and $G$-frames [PDF]

Sahand Communications in Mathematical Analysis
This paper is an analysis of the generalized phase (norm) retrieval problem, which aims to reconstruct a signal from its quadratic measurements. We provide some connections between phase (norm) retrieval $G$-frames and generalized phase (norm) retrieval ...
Fatemeh Shojaei, Mohammad Janfada, Ali akbar Arefijamaal   +2 more
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Effect of Pollination by Honey Bees on Seed Yield and Its Attributes in Egyptian Clover (Trifolium aalexandrinum L.) [PDF]

Journal of Plant Protection and Pathology, 2022
The effect of honey bees as a pollinator on quality and quantity of Egyptian clover (Trifolium alexandrinum L.) seeds was studied to get acquainted of the colony numbers (No.
A. Abd Elmonem, H. Mansour, T. EL-Gaafarey, A. Badawy,   +3 more
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SCALABILITY OF G-FRAMES BY DIAGONAL OPERATORS

Proceedings of the Institute of Mathematics and Mechanics, National Academy of Sciences of Azerbaijan, 2021
In this paper, the authors consider scalable $G$-frames in Hilbert spaces. Indeed, using diagonal operators, scalable $g$-frames are defined and some results about scalable $G$-frames are obtained, especially some necessary and sufficient conditions for the scalability of $G$-frames are presented.
Ahmadi, Ahmad, Rahimi, Asghar
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Some relationship between G-frames and frames [PDF]

Sahand 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
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