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math.FA2005
Schur multipliers and operator-valued Foguel-Hankel operators
Catalin Badea, Vern I. Paulsen
We show that some matrices are Schur multipliers and this is applied to obtain classes of operator-valued Foguel-Hankel operators similar to contractions. This provides partial ans…
math.FA2004
Frames, Graphs and Erasures
Bernhard G. Bodmann, Vern I. Paulsen
Two-uniform frames and their use for the coding of vectors are the main subject of this paper. These frames are known to be optimal for handling up to two erasures, in the sense th…