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math.FA2012
The simplified version of the Spielman and Srivastava algorithm for proving the Bourgain-Tzafriri restricted invertiblity theorem
Peter G. Casazza
By giving up the best constants, we will see that the original argument of Spielman and Srivastava for proving the Bourgain-Tzafriri Restricted Invertibility Theorem \cite{SS} stil…
math.NA2012
Weighted Fusion Frame Construction via Spectral Tetris
Peter G. Casazza, Jesse Peterson
Fusion frames consist of a sequence of subspaces from a Hilbert space and corresponding positive weights so that the sum of weighted orthogonal projections onto these subspaces is…
math.FA2012★ 2 cited
Necessary and sufficient conditions to perform Spectral Tetris
Peter Casazza, Andreas Heinecke, Keri Kornelson +2
Spectral Tetris has proved to be a powerful tool for constructing sparse equal norm Hilbert space frames. We introduce a new form of Spectral Tetris which works for non-equal norm…