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math.FA2023
Subspace Dual and orthogonal frames\\ by action of an abelian group
Sudipta Sarka, Niraj K. Shukla
In this article, we discuss subspace duals of a frame of translates by an action of a closed abelian subgroup of a locally compact group These subspace duals are…
math.FA2023
A characterization of MG Dual frames using infimum cosine angle
Sudipta Sarkar, Niraj K. Shukla
This article discusses the construction of dual frames and their uniqueness for the multiplication generated frames on , where is a -finite measure. A ne…
math.FA2023
Reproducing formulas associated to translation generated systems on Nilpotent Lie Groups
Sudipta Sarkar, Niraj K. Shukla
Let be a connected, simply connected, nilpotent Lie group whose irreducible unitary representations are square-integrable modulo the center. We obtain characterization results…