title: Regularity of some 'incomplete' Pal-type interpolation problems
abstract: In this paper the regularity of nine Pal-type interpolation problems is proved. In the literature interpolation on the zeros of the pair W/sub n//sup ( alpha )/(z) = (z + alpha )/sup n/ + (1 + alpha z)/sup n/, v/sub n//sup ( alpha )/(z) = (z + alpha )/sup n/ - (1 + alpha z)/sup n/ with 0 < alpha < 1 has been studied. Here the nodes form a subset of these sets of zeros
keyphrases: Pal-type interpolation problems zeros