RT Journal Article T1 A Duality Theorem for Interpolation Methods Associated to Polygons A1 Cobos Díaz, Fernando A1 Fernández Martínez, Pedro AB 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. PB American Mathematical Society SN 1088-6826 YR 1994 FD 1994 LK https://hdl.handle.net/20.500.14352/57275 UL https://hdl.handle.net/20.500.14352/57275 LA eng NO US-Spain Joint Committee for Cultural and Educational Cooperation DS Docta Complutense RD 12 abr 2025