A note on Davis type error bounds

Abstract

Abstract.Bounds for the error of the approximation of the value of a bounded linear functional

Interpolation Operators on the Space of Holomorphic Functions on the Unit Circle

“…We prove this theorem in the same way as in [8] (where it is given for a case of quadrature) but in more detail. From (14) it follows that the optimal interpolatory rule interpolates the functions n ).…”