Characterization of 1-quasi-greedy bases
classification
🧮 math.FA
keywords
quasi-greedyconstantequalbanachbasesbasischaracterizationonly
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We show that a (semi-normalized) basis in a Banach space is quasi-greedy with quasi-greedy constant equal to 1 if and only if it is unconditional with suppression-unconditional constant equal to 1.
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