Subspaces of containing
P. Enflo, T. Starbird (1979)
Studia Mathematica
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P. Enflo, T. Starbird (1979)
Studia Mathematica
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J. Arazy, J. Lindenstrauss (1975)
Compositio Mathematica
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W. B. Johnson, E. Odell (1974)
Compositio Mathematica
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C. Bessaga, A. Pełczyński (1958)
Studia Mathematica
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Abad, Manuel, Monteiro, Luiz (1980)
Portugaliae mathematica
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Ed Dubinsky, A. Pełczyński, H. Rosenthal (1972)
Studia Mathematica
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C. Leránoz (1992)
Studia Mathematica
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We prove that if 0 < p < 1 then a normalized unconditional basis of a complemented subspace of must be equivalent to a permutation of a subset of the canonical unit vector basis of . In particular, has unique unconditional basis up to permutation. Bourgain, Casazza, Lindenstrauss, and Tzafriri have previously proved the same result for .
Alfred Andrew (1979)
Studia Mathematica
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A. Pličko (1986)
Studia Mathematica
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P. Casazza, N. Kalton (1999)
Studia Mathematica
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We give counterexamples to a conjecture of Bourgain, Casazza, Lindenstrauss and Tzafriri that if X has a unique unconditional basis (up to permutation) then so does . We also give some positive results including a simpler proof that has a unique unconditional basis and a proof that has a unique unconditional basis when , and remains bounded.
P. Wojtaszczyk (1973)
Studia Mathematica
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