On Retro Frame Associated With Measurable Space

arXiv2105.07999MaRDI QIDQ6367854

Dharmatti Sheetal, Satyapriya, Raj Kumar, Ashok Kumar Sah

Publication date: 17 May 2021

Abstract: Frames are redundant system which are useful in the reconstruction of certain classes of spaces. Duffin and Schaeffer introduced frames for Hilbert spaces, while addressing some deep problems in non harmonic Fourier series. The dual of a frame (Hilbert) always exists and can be obtained in a natural way. In this paper we introduce the notion of $Omeg{a}_0$-type duality of retro $(Omega,mu)$-frames are given. Necessary and sufficient conditions for the existence of the dual of retro $(Omega,mu)$-frames are obtained. A special class of retro $(Omega,mu)$-frames which always admit a dual frame is discussed.

Mathematics Subject Classification ID

Linear operators on Banach algebras (47B48) General harmonic expansions, frames (42C15) Summability and bases; functional analytic aspects of frames in Banach and Hilbert spaces (46B15) Completeness of sets of functions in nontrigonometric harmonic analysis (42C30)

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