On Asymptotic Structure, the Szlenk Index and UKK Properties in Banach Spaces

On Asymptotic Structure, the Szlenk Index and UKK Properties in Banach Spaces Let B be a separable Banach space and let X=B * be separable. We prove that if B has finite Szlenk index (for all ε > 0) then B can be renormed to have the weak* uniform Kadec-Klee property. Thus if ε > 0 there exists δ (ε) > 0 so that if x n is a sequence in the ball of X converging ω* to x so that $$\lim \inf _{n \to \infty } \left\| {x_n - x} \right\| \geqslant \varepsilon {\text{ then }}\left\| x \right\| \leqslant 1 - \delta (\varepsilon )$$ . In addition we show that the norm can be chosen so that δ (ε) ≥ cεp for some p < ∞ and c >0. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Positivity Springer Journals

On Asymptotic Structure, the Szlenk Index and UKK Properties in Banach Spaces

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Kluwer Academic Publishers
Copyright © 1999 by Kluwer Academic Publishers
Mathematics; Fourier Analysis; Operator Theory; Potential Theory; Calculus of Variations and Optimal Control; Optimization; Econometrics
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  • Property (M),M-ideals, and almost isometric structure of Banach spaces
    Kalton, N. J.; Werner, D.

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