Linear independence of the blending functions of T-splines without multiple knots

Linear independence of the blending functions of T-splines without multiple knots
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无多个节点的 T 样条混合函数的线性独立性

DOI:
10.1016/j.eswa.2013.12.012
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发表时间:
2014-06
影响因子:
8.5
通讯作者:
Li, Yong-Dong
Li, Yong-Dong
中科院分区:
计算机科学1区
文献类型:
--
作者:
Wang, Aizeng;Zhao, Gang;Li, Yong-Dong

文献摘要

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本论文的目的是回答Sederberg的研究小组提出的一个开放性问题:是否存在具有线性相关混合函数的T-样条函数没有多重结点?首先,分析了无重结点T样条混合函数的数学性质。证明了它们的线性无关性,同时给出了T样条混合函数线性相关的一个必要条件。最后,得到了开放问题的答案:没有T样条的线性相关的混合函数,没有多重节点。
The purpose of the present paper is to answer the following open question given by Sederberg’s research team: are there T-splines with linearly dependent blending functions that do not have multiple knots? First, the mathematical properties of the blending functions of T-splines without multiple knots are analyzed. Then, the linear independence of them is proved, and meanwhile a necessary condition is deduced for the linear dependence of T-spline blending functions. Finally, the answer to the open question is obtained: there are no T-splines with linearly dependent blending functions that do not have multiple knots.
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