参数多项式系统的最小综合Gröbner基的一种算法
An Algorithm for Computing a Minimal Comprehensive Gröbner\, Basis of a Parametric Polynomial System
摘要:
给出了由任意的忠实综合Gröbner系统生成参数多项式系统的最小综合Gröbner基的算法.参数多项式理想的基是综合Gröbner基当且仅当对于给定域中参数的每个特化,该基的特化是相关特化多项式理想的Gröbner基。用于确保极小的关键思想是,一个多项式是必不可少的全面Gröbner\,基础。必要性检查是通过确定一个多项式是否可以在一个综合的Gröbner系统中的相关分支中被其他多项式覆盖以用于各种专门化来执行的。该算法已被实现,并成功地尝试了许多例子从文献。
英文摘要:
An algorithm to generate a minimal comprehensive Gröbner\, basis of a parametric polynomial system from an arbitrary faithful comprehensive Gröbner\, system is presented. A basis of a parametric polynomial ideal is a comprehensive Gröbner\, basis if and only if for every specialization of parameters in a given field, the specialization of the basis is a Gröbner\, basis of the associated specialized polynomial ideal. The key idea used in ensuring minimality is that of a polynomial being essential with respect to a comprehensive Gröbner\, basis. The essentiality check is performed by determining whether a polynomial can be covered for various specializations by other polynomials in the associated branches in a comprehensive Gröbner\, system. The algorithm has been implemented and successfully tried on many examples from the literature.
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