arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 2102.00418math.NAcs.NA
收藏

多次Tchebycheffian B样条的计算

Computation of multi-degree Tchebycheffian B-splines

Hendrik Speleers

摘要:

多阶切比雪夫样条(英语:Multi-degree Tchebycheffian splines)是从扩展的切比雪夫空间(英语:extended(complete)Tchebycheff spaces)中提取的样条,其可能因区间而异,并且可能具有不同的维度。这些是多次多项式样条的自然扩张。在相当温和的假设下,它们可以表示在一个所谓的MDT样条基,这样的基础上拥有所有的经典多项式B样条基的特征属性。我们提出了一个实用的框架来计算MDTB样条,并提供了一个面向对象的Matlab实现。该实现支持MDTB样条的构造、微分和可视化,MDTB样条的片属于Tchebycheff空间,Tchebycheff空间是常系数线性微分算子的零空间。该构造依赖于将局部切比雪夫伯恩斯坦函数映射到感兴趣的MDT样条基的提取算子。

英文摘要:

Multi-degree Tchebycheffian splines are splines with pieces drawn from extended (complete) Tchebycheff spaces, which may differ from interval to interval, and possibly of different dimensions. These are a natural extension of multi-degree polynomial splines. Under quite mild assumptions, they can be represented in terms of a so-called MDTB-spline basis; such basis possesses all the characterizing properties of the classical polynomial B-spline basis. We present a practical framework to compute MDTB-splines, and provide an object-oriented implementation in Matlab. The implementation supports the construction, differentiation, and visualization of MDTB-splines whose pieces belong to Tchebycheff spaces that are null-spaces of constant-coefficient linear differential operators. The construction relies on an extraction operator that maps local Tchebycheffian Bernstein functions to the MDTB-spline basis of interest.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑