arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1002.4784cs.SCcs.CGcs.MS
收藏

半代数系统的三角分解

Triangular Decomposition of Semi-algebraic Systems

Changbo Chen, James H. Davenport, John P. May, Marc Moreno Maza, Bican Xia, Rong Xiao

摘要:

正则链和三角分解是描述多项式方程组复解的基本工具。本文提出了适应这些工具,重点解决方案的真正的模拟:半代数系统。我们证明了任何这样的系统都可以分解成n个{ \em正则半代数系统}。我们提出了两个规格,这样的分解,并提出相应的算法。在某些假设下,一种类型的分解可以在单指数时间w.r.t.内计算。变量的数量。我们实现了我们的算法,实验结果表明其有效性。

英文摘要:

Regular chains and triangular decompositions are fundamental and well-developed tools for describing the complex solutions of polynomial systems. This paper proposes adaptations of these tools focusing on solutions of the real analogue: semi-algebraic systems. We show that any such system can be decomposed into finitely many {\em regular semi-algebraic systems}. We propose two specifications of such a decomposition and present corresponding algorithms. Under some assumptions, one type of decomposition can be computed in singly exponential time w.r.t.\ the number of variables. We implement our algorithms and the experimental results illustrate their effectiveness.

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。

↑