Mathematics – Functional Analysis
Scientific paper
2008-09-16
Mathematics
Functional Analysis
29 pages, title changes, revised version to appear in Trans. Amer. Math. Soc
Scientific paper
We introduce the class of slicely countably determined Banach spaces which contains in particular all spaces with the RNP and all spaces without copies of $\ell_1$. We present many examples and several properties of this class. We give some applications to Banach spaces with the Daugavet and the alternative Daugavet properties, lush spaces and Banach spaces with numerical index 1. In particular, we show that the dual of a real infinite-dimensional Banach with the alternative Daugavet property contains $\ell_1$ and that operators which do not fix copies of $\ell_1$ on a space with the alternative Daugavet property satisfy the alternative Daugavet equation.
Avilés Antonio
Kadets Vladimir
Martin Miguel
Meri Javier
Shepelska Varvara
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