Dual Kadec-Klee norms and the relationships between Wijsman, slice and Mosco convergence

Details Dual Kadec-Klee norms and the relationships between Wijsman, slice and Mosco convergence Dual Kadec-Klee norms and the relationships between Wijsman, slice and Mosco convergence

1993-02-09

arxiv.org/abs/math/9302212v1

Mathematics

Functional Analysis

Scientific paper

In this paper, we completely settle several of the open questions regarding the relationships between the three most fundamental forms of set convergence. In particular, it is shown that Wijsman and slice convergence coincide precisely when the weak star and norm topologies agree on the dual sphere. Consequently, a weakly compactly generated Banach space admits a dense set of norms for which Wijsman and slice convergence coincide if and only if it is an Asplund space. We also show that Wijsman convergence implies Mosco convergence precisely when the weak star and Mackey topologies coincide on the dual sphere. A corollary of these results is that given a fixed norm on an Asplund space, Wijsman and slice convergence coincide if and only if Wijsman convergence implies Mosco convergence.

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