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20202026
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8 papers · 1 filter

math.FA2026

Infinite Matrix Operators and -Frames in Hilbert Spaces

Hassan Hedayati Rad, Tayebe Lal Shateri

The concept of an -frame, recently introduced in frame theory, is obtained by applying an infinite invertible complex matrix to a sequence of elements of a Hilbert space $\mathc…

math.FA2025

E-frames multipliers

Hassan Hedayatirad, Tayebe Lal Shateri

-frames are a new generalization for the concept of frames for , where is an infinite invertible complex matrix mapping on

math.FA2024

Controlled -frames in Hilbert spaces

H. Hedayatirad, T. L. Shateri

In the present paper, we introduce the notion of controlled -frames. Then we investigate and study some properties of them and characterize all controlled -duals associated w…

math.FA2024

--frames

H. Hedayatirad, T. L. Shateri

In the present paper, we introduce the notion of --frames for a separable Hilbert spaces , where is an invertible infinite matrix mapping on the Hilbert space…

math.FA2024

On -frames in Hilbert spaces

H. Hedayatirad, T. L. Shateri

In this paper, we have stated some results about this concept. Furthermore, we introduce the notion of controlled -frames and we characterize all controlled -duals associated…

math.FA2022

Some fixed point theorems for multi-valued mappings on partial cone metric spaces

T. L. Shateri, H. Isik

In this paper, we study the fixed point theory for multi-valued mappings on partial cone metric spaces. We prove an analogous to the well-known Kannan fixed point theorem and C…