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7 p, 190.0 KB Chebyshev coefficients for L1-preduals and for spaces with the extension property / Bayod, José M. ; Masa, Concepción
We apply the Chebyshev coefficients λf and λb, recently introduced by the authors, to obtain some results related to certain geometric properties of Banach spaces. We prove that a real normed space E is an L1 predual if and only if λf (E) = 1/2, and that if a (real or complex) normed space E is a P1 space, then λb(E) equals λb(K), where K is the ground field of E.
1990 - 10.5565/PUBLMAT_34290_14
Publicacions matemàtiques, V. 34 n. 2 (1990) p. 341-347  

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