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Hilbert-Schauder Frame Operators (1206.6146v1)
Published 27 Jun 2012 in math.FA, math.CA, and math.OA
Abstract: We introduce a new concept of frame operators for Banach spaces we call a Hilbert-Schauder frame operator. This is a hybird between standard frame theory for Hilbert spaces and Schauder frame theory for Banach spaces. Most of our results involve basic structure properties of the Hilbert-Schauder frame operator. Examples of Hilbert-Schauder frames include standard Hilbert frames and classical bases of $\ell_p$ and $Lp$-spaces with $1< p \le 2$. Finally, we give a new isomorphic characterization of Hilbert spaces.