Bivariate Lagrange interpolation at the node points of non-degenerate Lissajous curves
Bivariate Lagrange interpolation at the node points of non-degenerate Lissajous curves
复制标题
非简并利萨如曲线节点处的双变量拉格朗日插值
DOI:
10.1007/s00211-015-0762-1
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发表时间:
2016
影响因子:
2.1
通讯作者:
T. M. Buzug
中科院分区:
文献类型:
--
作者:
W. Erb;K. Kaethner;M. Ahlborg;T. M. Buzug
Motivated by an application in Magnetic Particle Imaging, we study bivariate Lagrange interpolation at the node points of Lissajous curves. The resulting theory is a generalization of the polynomial interpolation theory developed for a node set known as Padua points. With appropriately defined polynomial spaces, we will show that the node points of non-degenerate Lissajous curves allow unique interpolation and can be used for quadrature rules in the bivariate setting. An explicit formula for the Lagrange polynomials allows to compute the interpolating polynomial with a simple algorithmic scheme. Compared to the already established schemes of the Padua and Xu points, the numerical results for the proposed scheme show similar approximation errors and a similar growth of the Lebesgue constant.
影响因子:
0.6
作者:
C. Lamm
通讯作者:
C. Lamm
影响因子:
2.1
作者:
L. Bos;S. Marchi;M. Vianello;Yuan Xu
通讯作者:
Yuan Xu
影响因子:
10.6
作者:
C. Kaethner;M. Ahlborg;G. Bringout;M. Weber;T. M. Buzug
通讯作者:
T. M. Buzug