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arXiv 2403.16636math.AG
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检测任意维度下特定类型参数曲线之间的仿射等价性

Detecting affine equivalences between certain types of parametric curves, in any dimension

Juan Gerardo Alcázar, Hüsnü Anıl Çoban, Uğur Gözütok

AI总结:

本文提出一种计算任意维度特定类型参数曲线间仿射等价性的算法,适用于有理曲线及含亚纯分量且有理逆的曲线,通过二元分解避免多项式系统求解,并在Maple中实现。

摘要:

如果存在一个仿射映射将两条曲线中的一条变换到另一条,则这两条曲线是仿射等价的。因此,检测仿射等价性包含了相似性、全等性和对称性检测等重要特例。在本文中,我们推广了作者先前的结果,提供了一种算法,用于计算任意维度下特定类型的两条参数曲线之间的仿射等价性。更详细地说,该算法适用于有理曲线,以及具有非有理但亚纯分量且容许有理逆的参数曲线。与已有的针对有理曲线的算法不同,该算法完全避免了多项式系统求解,而是将二元分解作为基本工具。该算法已在计算机代数系统Maple中实现,可免费下载和使用。

英文摘要:

Two curves are affinely equivalent if there exists an affine mapping transforming one of them onto the other. Thus, detecting affine equivalence comprises, as important particular cases, similarity, congruence and symmetry detection. In this paper we generalize previous results by the authors to provide an algorithm for computing the affine equivalences between two parametric curves of certain types, in any dimension. In more detail, the algorithm is valid for rational curves, and for parametric curves with non-rational but meromorphic components admitting a rational inverse. Unlike other algorithms already known for rational curves, the algorithm completely avoids polynomial system solving, and uses bivariate factoring, instead, as a fundamental tool. The algorithm has been implemented in the computer algebra system {\tt Maple}, and can be freely downloaded and used.

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。

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