Results 21 to 30 of about 660,488 (250)
Approximate Duals of $g$-frames and Fusion Frames in Hilbert $C^ast-$modules [PDF]
Sahand Communications in Mathematical Analysis, 2019 In this paper, we study approximate duals of $g$-frames and fusion frames in Hilbert $C^ast-$modules. We get some relations between approximate duals of $g$-frames and biorthogonal Bessel sequences, and using these relations, some results for approximate
Morteza Mirzaee Azandaryani
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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 +3 more
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$G$-dual Frames in Hilbert $C^{*}$-module Spaces [PDF]
Sahand Communications in Mathematical Analysis, 2018 In this paper, we introduce the concept of $g$-dual frames for Hilbert $C^{*}$-modules, and then the properties and stability results of $g$-dual frames are given.
Fatemeh Ghobadzadeh, Abbas Najati
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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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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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Horizontal and vertical colonies for royal jelly production in Brazil [PDF]
Revista Brasileira de Zootecnia, 2022 The potential of royal jelly production in Africanized honeybee colonies was evaluated using techniques involving two queens per colony in horizontal and vertical systems during the spring of 2019.
Jessica Carolina Camargo López +5 more
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*-g-frames in tensor products of Hilbert C*-modules
Annales Universitatis Paedagogicae Cracoviensis: Studia Mathematica, 2018 In this paper, we study *-g-frames in tensor products of Hilbert C*-modules. We show that a tensor product of two *-g-frames is a *-g-frame, and we get some result.
Mohamed Rossafi, Samir Kabbaj
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A comparison between mesospheric wind measurements made near Christchurch (44°S, 173°E) using the high resolution doppler imager (HRDI) and a medium frequency (MF) radar [PDF]
Annales Geophysicae, 2000 We report on the comparison of winds measured by a medium frequency (MF) radar near Christchurch, New Zealand, and by the high resolution doppler imager (HRDI).
D. J. Frame +5 more
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Journal of Mathematical Analysis and Applications, 2008 The authors study generalized, i.e., \(g\)-frames in a Hilbert space \(U\), that is, sequences \((\Lambda_i)_{i\in I}\) of linear operators \(\Lambda_i:U\to V_i\) such that \[ A\| f\| ^2 \leq \sum_{i\in I} \| \Lambda_i f\| ^2 \leq B \| f\| ^2, \] for some positive constants \(A\) and \(B\).
Khosravi, Amir, Musazadeh, Kamran
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Some Inequalities for g-Frames in Hilbert C*-Modules
Mathematics, 2018 In this paper, we obtain new inequalities for g-frames in Hilbert C * -modules by using operator theory methods, which are related to a scalar λ ∈ R and an adjointable operator with respect to two g-Bessel sequences.
Zhong-Qi Xiang
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