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| Direct and Inverse Results for Combinations and Derivatives of Bernstein Operators | |
| 作者姓名： | 谢林森 |
| 基金项目： | the Zhejiang Provincial Natural Sciences Foundation of China. |
| 摘 要： | The author is supported by the Zhejiang Provincial Natural Sciences Foundation of China.For the Bernstein operators, M. Feltenl] gave the direct and inverse estimates by theDitzian-Totik modulus of smoothness w~2(f, t), whereby the step-weight. is a function as suchthat is concave for the direct estimate and . are concavefor the inverse estimate. For the combinations of the Bernstein operators, D. X. Zhou2] gavethe direct and inverse estimates by the classical modulus of smoothness wit… |
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