arXivDaily arXiv每日学术速递 周一至周五更新
arXiv cs/0301024cs.CCmath.CO
收藏

内在式的复杂性和完备性

Complexity and Completeness of Immanants

Jean-Luc Brylinski, Ranee Brylinski

摘要:

固有子是n × n矩阵的多项式函数,它附加在对称群Sn的不可约特征标上,或等价于大小为n的Young图。内在性包括决定性和永久性作为极端情况。Valiant在他的NP理论的代数模型中证明了积和式的计算是一个完整的问题,即,它是VNP完成。我们证明了,如果固有子被连接到一个图族,其分离度为$Ω(n^δ)$,对于某些$δ>0$,固有子的计算是VNP-完全的。我们将图的分隔定义为单行中包含的最大数量的悬伸框。我们的定理证明了一个猜想Buergisser为各种各样的家庭,特别是我们恢复与新的证明他的VNP-完整性结果的挂钩和矩形。

英文摘要:

Immanants are polynomial functions of n by n matrices attached to irreducible characters of the symmetric group S_n, or equivalently to Young diagrams of size n. Immanants include determinants and permanents as extreme cases. Valiant proved that computation of permanents is a complete problem in his algebraic model of NP theory, i.e., it is VNP-complete. We prove that computation of immanants is VNP-complete if the immanants are attached to a family of diagrams whose separation is $Ω(n^δ)$ for some $δ>0$. We define the separation of a diagram to be the largest number of overhanging boxes contained in a single row. Our theorem proves a conjecture of Buergisser for a large variety of families, and in particular we recover with new proofs his VNP-completeness results for hooks and rectangles.

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。

↑