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A note on unconditional structures in weak Hilbert spaces. (English) Zbl 0799.46018

We prove that if a non-atomic separable Banach lattice is a weak Hilbert space, then it is lattice isomorphic to \(L_ 2 (0,1)\).

MSC:

46B42 Banach lattices
46B20 Geometry and structure of normed linear spaces
46B15 Summability and bases; functional analytic aspects of frames in Banach and Hilbert spaces