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Isomorphic characterizations of Hilbert spaces by orthogonal series with vector valued coefficients. (English) Zbl 0263.46020

Sémin. Maurey-Schwartz 1972-1973, Espaces \(L^p\) Appl. radonif., No.VIII, 7 p. (1973).

MSC:

46B03 Isomorphic theory (including renorming) of Banach spaces
46C05 Hilbert and pre-Hilbert spaces: geometry and topology (including spaces with semidefinite inner product)
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