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Recently, fusion frames and frames for operators were considered as generalizations of frames in Hilbert spaces. In this paper, we generalize some of the known results in frame theory to fusion frames related to a linear bounded operator K…

泛函分析 · 数学 2021-12-10 Yuxiang Xu , Dongwei Li , Jinsong Leng

K-frames were recently introduced by L. G\v{a}vruta in Hilbert spaces to study atomic systems with respect to bounded linear operator. Also controlled frames have been recently introduced by P. Balazs in Hilbert spaces to improve the…

泛函分析 · 数学 2016-02-15 Asghar Rahimi , Shahram Najafzadeh , Mohamad Nouri

Few years ago G\u{a}vru\c{t}a gave the notions of $K$-frame and atomic system for a linear bounded operator $K$ in a Hilbert space $\mathcal{H}$ in order to decompose $\mathcal{R}(K)$, the range of $K$, with a frame-like expansion. These…

泛函分析 · 数学 2020-01-01 Giorgia Bellomonte

In this paper, we will introduce a new notion, that of $K$-Integral operator frames in the set of all bounded linear operators noted $\mathcal{B}(H)$, where $H$ is a separable Hilbert space. Also, we prove some results of integral…

泛函分析 · 数学 2020-08-13 Hatim Labrigui , Mohamed Rossafi , Abdeslam Touri , Samir Kabbaj

K-frames, a new generalization of frames, were recently considered by L. Gavruta in connection with atomic systems and some problems arising in sampling theory. Also, fusion frames are an important generalization of frames, applied in a…

泛函分析 · 数学 2017-05-02 Fahimeh Arabyani Neyshaburi , Ali Akbar Arefijamaal

In this paper, we first introduce the notion of controlled weaving K-g-frames in Hilbert spaces. Then, we present sufficient conditions for controlled weaving K-g-frames in separable Hilbert spaces. Also, a characterization of controlled…

泛函分析 · 数学 2018-12-04 Reza Rezapour , Asghar Rahimi , E. Osgooei , Hossien Dehghan

K-frames were recently introduced by L. G\v{a}vruta in Hilbert spaces to study atomic systems with respect to bounded linear operator. Also controlled frames have been recently introduced by Balazs, Antoine and Grybos in Hilbert spaces to…

泛函分析 · 数学 2016-02-15 Asghar Rahimi , Shahram Najafzadeh , Mohamad Nouri

We give a characterization of K-g-fusion frames and discuss the stability of dual g-fusion frames. We also present a necessary and sufficient condition for a quotient operator to be bounded.

泛函分析 · 数学 2021-03-04 Prasenjit Ghosh , T. K. Samanta

Controlled g-atomic subspace for a bounded linear operator is being presented and a characterization has been given. We give an example of controlled K-g-fusion frame. We construct a new controlled K-g-fusion frame for the Hilbert space H ?…

泛函分析 · 数学 2023-03-29 Prasenjit Ghosh , T. K. Samanta

In this paper we introduce the concepts of atomic systems for operators and K-frames in Hilbert C*-modules and we establish some results.

算子代数 · 数学 2014-03-04 Abbas Najati , M. Mohammadi Saem , P. Gavruta

Gavruta introduced $K$-frames for Hilbert spaces to study atomic systems with respect to a bounded linear operator. There are many differences between K-frames and standard frames, so we study weaving properties of K-frames. Two frames…

泛函分析 · 数学 2018-06-08 Deepshikha , Lalit K. Vashisht

A generalization of continuous biframe in a Hilbert space is introduced and a few examples are discussed. Some characterizations and algebraic properties of this biframe are given. Here we also construct various types of continuous…

泛函分析 · 数学 2024-03-06 Prasenjit Ghosh , T. K. Samanta

Controlled frames have been the subject of interest because of its ability to improve the numerical efficiency of iterative algorithms for inverting the frame operator. In this paper, we introduce the notion of controlled $K$-frame in…

泛函分析 · 数学 2019-04-23 Ekta Rajput , N. K. Sahu

$K$-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…

泛函分析 · 数学 2020-07-13 N. Assila , S. Kabbaj , B. Moalige

Frames for operators or k-frames were recently considered by Gavruta (2012) in connection with atomic systems. Also generalized frames are important frames in the Hilbert space of bounded linear operators. Fusion frames, which are a special…

泛函分析 · 数学 2018-06-12 Vahid Sadri , Reza Ahmadi , Asghar Rahimi

We present the notion of continuous controlled K-g-fusion frame in Hilbert space which is the generalization of discrete controlled K-g-fusion frame. We discuss some characterizations of continuous controlled K-g-fusion frame. Relationship…

泛函分析 · 数学 2024-10-16 Prasenjit Ghosh , T. K. Samanta

Frame theory is recently an active research area in mathematics, computer science and engineering with many exciting applications in a variety of different fields. This theory has been generalized rapidly and various generalizations of…

泛函分析 · 数学 2020-11-25 Mohamed Rossafi , Brahim Moalige , Hamid Faraj , Abdeslam Touri , Samir Kabbaj

Fuzzy metric spaces, grounded in t-norms and membership functions, have been widely proposed to model uncertainty in machine learning, decision systems, and artificial intelligence. Yet these frameworks treat uncertainty as an external…

量子物理 · 物理学 2025-09-30 Nicola Fabiano

In this paper, we will introduce the new concept of K-bi-g-frames for Hilbert spaces. Then, we examine some characterizations with the help of a biframe operator. Finally, we investigate several results about the stability of K-bi-g-frames…

泛函分析 · 数学 2024-03-12 Abdelilah Karara , Mohamed Rossafi

In this paper, we introduce a new concept of K-biframes for Hilbert spaces. We then examine several characterizations with the assistance of a biframe operator. Moreover, we investigate their properties from the perspective of operator…

泛函分析 · 数学 2024-02-15 Abdelilah Karara , Mohamed Rossafi
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