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多元Sikkema-Kantorovitch算子的L~p逼近
L~p Approximation for Multivariate Sikkema-Kantorovitch Operators
【摘要】 在单纯形上定义多元Sikkema-Kantorovitch算子kn(f),利用Ditizan-Totik光滑模讨论该算子的逼近问题,给出其强型正定理,估计出它在空间Lp的收敛速度并给予证明.文中的结果可以推广到K(K>2)维单纯形上.
【Abstract】 The multivariate Sikkema-Kantorovitch operators k_n(f) defined on the simplex are discussed by using the Ditizan-Totik modulus of smoothness.The strong-type direct theorem are given,and the rate of convergence is estimated and proven in the space L~p.The result can be qeneralized to multidimensional simplex.
【关键词】 单纯形;
多元Sikkema-Kantorovitch算子;
逼近;
强型正定理;
光滑模;
【Key words】 simplex; the multivariate Sikkema-Kantorovitch operators; approximation; direct theorem; modulus of smoothness;
【Key words】 simplex; the multivariate Sikkema-Kantorovitch operators; approximation; direct theorem; modulus of smoothness;
- 【文献出处】 华侨大学学报(自然科学版) ,Journal of Huaqiao University(Natural Science) , 编辑部邮箱 ,2006年03期
- 【分类号】O177
- 【下载频次】28