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Norm attaining multilinear forms and polynomials on preduals of Lorentz sequence spaces.

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1998
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Polish Acad Sciencies Inst Mathematics
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For each natural number N, we give an example of a Banach space X such that the set of norm attaining N{linear forms is dense in the space of all continuous N{linear forms on X, but there are continuous (N +1){linear forms on X which cannot be approximated by norm attaining (N+1){linear forms. Actually, X is the canonical predual of a suitable Lorentz sequence space. We also get the analogous result for homogeneous polynomials.
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