$(0,3)$ interpolation on the zeros of $\pi_n(x)$
$(0,3)$ interpolation on the zeros of $\pi_n(x)$
Introduction.Balazs' and Turan's work [1] on (0.2) interpolation in 1957 led to considerable interest in the general problem of Birkhoff interpolation.However, in spite of the recent classic book on this subject by G.G. Lorentz et al. [2]. the problem of (0.3) interpolation on the zeros of n n (.v) seems …