Reiteration and a Wolff theorem for interpolation methods defined by means of polygons
Fernando Cobos, Pedro Fernandez-Martinez (1992)
Studia Mathematica
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We prove a reiteration theorem for interpolationmethods defined by means of polygons, and a Wolff theorem for the case when the polygon has 3 or 4 vertices. In particular, we establish a Wolff theorem for Fernandez' spaces, which settles a problem left over in [5].