Abstract
LetX be an infinite dimensional Banach space, andX* its dual space. Sequences {χ *n } ∞n=1 ⊆X* which arew* converging to 0 while inf n ‖x* n ‖>0, are constructed.
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Nissenzweig, A. w* sequential convergence. Israel J. Math. 22, 266–272 (1975). https://doi.org/10.1007/BF02761594
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DOI: https://doi.org/10.1007/BF02761594