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arXiv 1206.3463cs.SCmath.RA
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差分Groebner基的计算

Computation of Difference Groebner Bases

Vladimir P. Gerdt, Daniel Robertz

摘要:

为了计算由线性多项式生成的理想的差分Groebner基,我们对差分多项式环采用基于Janet-like除法的对合算法。该算法已在Maple中实现的软件包LDA(线性差分代数)的形式,我们描述了该软件包的主要功能。它的应用说明生成的有限差分近似线性偏微分方程和减少费曼积分。我们还提出了算法的理想产生的有限集的非线性差分多项式。如果算法终止,则它构造理想的Groebner基。

英文摘要:

To compute difference Groebner bases of ideals generated by linear polynomials we adopt to difference polynomial rings the involutive algorithm based on Janet-like division. The algorithm has been implemented in Maple in the form of the package LDA (Linear Difference Algebra) and we describe the main features of the package. Its applications are illustrated by generation of finite difference approximations to linear partial differential equations and by reduction of Feynman integrals. We also present the algorithm for an ideal generated by a finite set of nonlinear difference polynomials. If the algorithm terminates, then it constructs a Groebner basis of the ideal.

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