| Stancu-Sikkema算子的点态估计 |
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| 引用本文： | 刘喜武,郭顺生,刘丽霞.Stancu-Sikkema算子的点态估计[J].数学研究及应用,2003,23(1):59-64. |
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| 作者姓名： | 刘喜武 郭顺生 刘丽霞 |
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| 作者单位： | 1. 河北经贸大学计算机中心,河北,石家庄,050091
2. 河北师范大学数学系,河北,石家庄,050016 |
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| 基金项目： | Supported by NSF of Hebei Province(101090) |
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| 摘 要： | 本文构造了Stancu—Sikkema算子,并利用点态光滑模研究了此算子的点态逼近正逆定理.
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| 关 键 词： | Stancu－Sikkema算子 点态估计 点态光滑模 点态逼近 |
| 收稿时间： | 2000/1/18 0:00:00 |
The Pointwise Estimate for Stancu-Sikkema Operators |
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| LIU Xi-wu,GUO Shun-sheng and LIU Li-xia.The Pointwise Estimate for Stancu-Sikkema Operators[J].Journal of Mathematical Research with Applications,2003,23(1):59-64. |
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| Authors: | LIU Xi-wu GUO Shun-sheng and LIU Li-xia |
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| Affiliation: | Center; of Comp.; Hebei University of Economy & Trade; Shijiazhuang; China;Dept. of Math.; Hebei Normal University; China;Dept. of Math.; Hebei Normal University; China |
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| Abstract: | In this paper, we construct Stancu-Sikkema operators and obtain the point-wise direct and converse theorems in terms of pointwise modulus of smoothness. Some results about Bernstein-Sikkema operators and Stancu operators are extended. |
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| Keywords: | Stancu-Sikkema operators modulus of smoothness K-functional |
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