Total subspaces with long chains of nowhere norming weak∗^* sequential closures

preprint1993arXivOpen access

Abstract

If a separable Banach space XX is such that for some nonquasireflexive Banach space YY there exists a surjective strictly singular operator T:X→YT:X\to Y then for every countable ordinal αα the dual of XX contains a subspace whose weak∗^* sequential closures of orders less than αα are not norming over any infinite-dimensional subspace of XX and whose weak∗^* sequential closure of order α+1α+1 coincides with X∗X^*

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