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A duality theorem for interpolation methods associated to polygons

Authors: Fernando Cobos and Pedro Fernández-Martínez
Journal: Proc. Amer. Math. Soc. 121 (1994), 1093-1101
MSC: Primary 46M35; Secondary 46B70
MathSciNet review: 1209420
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Abstract: We investigate dual spaces of interpolation spaces defined by means of polygons. We first show that dual spaces may fail to be intermediate spaces with respect to the dual N-tuple, and then we prove that dual spaces of J-spaces can be identified with closed subspaces of K-spaces generated by the dual N-tuple.

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