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arXiv 1102.4681cs.SC
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具有线性单变量表示的零维多项式系统的根隔离

Root Isolation of Zero-dimensional Polynomial Systems with Linear Univariate Representation

Jin-San Cheng, Xiao-Shan Gao, Leilei Guo

摘要:

本文给出了零维多项式方程组根的一元线性表示,其中方程组的根表示为若干个一元多项式方程的根的线性组合。这种表示的主要优点是根的精度可以很容易地控制。事实上,基于线性一元表示,我们可以给出一元方程的根所需的精确精度,以便在给定精度下获得方程组的根。因此,零维多项式方程组的根隔离算法可以很容易地从其线性单变量表示导出。

英文摘要:

In this paper, a linear univariate representation for the roots of a zero-dimensional polynomial equation system is presented, where the roots of the equation system are represented as linear combinations of roots of several univariate polynomial equations. The main advantage of this representation is that the precision of the roots can be easily controlled. In fact, based on the linear univariate representation, we can give the exact precisions needed for roots of the univariate equations in order to obtain the roots of the equation system to a given precision. As a consequence, a root isolation algorithm for a zero-dimensional polynomial equation system can be easily derived from its linear univariate representation.

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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