【关於周期函数逼近的几个问题】.pdf
Abstraot The problemof approximation of periodic funetion has drawm the attention of many schoior.In this paper Wehavestudiied some problensofapprcximation ofper foaie funettong and have attained some naw resultsThe paper is divided into fourparts.The first part is introcuetion.
>0byma(x)xx)MoreoverstheLipschity,classIip(o,dy,s)O
(ii)converges in the L(e-metric to f for every 0