摘要
In this paper we construct a new operator Hn,r（N,B） （f; z） by means of the partial sums S（N,S） （f; z） of Neumann-Bessel series. The operator converges uniformly to any fixed continuous function f（z） on the unit circle ｜ z ｜= 1 and has the best approximation order for f（z） on ｜ z ｜= 1.
In this paper we construct a new operator H_(n,r)^((N,B))(f;z)by means of the partial sums S_n^((N,B))(f;z)of Neumann-Bessel series.The operator converges uniformly to any fixed continuous function f(z)on the unit circle |z|=1 and has the best approximation order for f(z)on |z|=1.
