Fejer-Korovkin算子及一种内插线性算子的渐近展开 (1983年)

Let f (x) Gcosjt,Let k be a positive integer,We obtain the following theorems. Theorem 1 Let m be a positive integer,f (x) Then,we have Theorem 2 Let be a positive integer;and m be a non-negative integer. If then.