摘要
讨论了算子（N，P）的最佳逼近阶以及达到此逼近阶的一个充分条件。得到了f∈Lipα及f’∈Lipα时逼近误差的上界。
The best order of approximation by (N, P) means of T-F series is discussed, and asufficient condition to reach this order is found. The upper bounds of error of approximationfor f∈ Lipα and f’∈Lipα are obtained respectirely.
作者
徐延安
Xu Yanan(Dept. of Textile)
