Jackson积分算子对连续函数的逼近For the Approximation of Continuous Functions By Jackon Integral Operator
庄碧如,万传良
摘要(Abstract):
设K.是Jackson算子J_n的逼近度。本文应用[2]中K_2的积分表示,证明{K_(2N-1)}渐减到K=3/πintegral from n=0 to ∞[4/πt](sint/t)~4dt并且对所有的u,有K_s≥K_2=2(1-2/π3~(1/2),以及inf sup||J_n(f)-f||_e/ω(f,π/n+1)=K_2=2(1-2/π3~(1/2))
关键词(KeyWords): Jackson算子;连续模;逼近度
基金项目(Foundation):
作者(Author): 庄碧如,万传良