在NIEP中从旧列表构造新的可实现列表
Constructing New Realisable Lists from Old in the NIEP
摘要:
给定一列复数σ:=(λ_1,λ_2,.,λ_m),我们说σ是可实现的,如果σ是某个(逐项)非负矩阵的谱。非负逆本征值问题(Nonnegative Inverse Eigenvalue Problem,NIEP)是一个对所有可实现列表进行分类的问题。给定一个可实现的列表(ρ,λ_2,λ_3,.,λ_m),其中ρ是Perron特征值,λ_2是实数,我们找到列表族(μ_1,μ_2,.,μ_n),其中(μ_1,μ_2,.,μ_n,λ_3,λ_4,.λ_m)是可实现的。另外,给定一个可实现的列表(ρ,α+iβ,α-iβ,λ_4,λ_5,.,λ_m),其中ρ是Perron特征值,α和β是实数,我们找到了列表族(μ_1,μ_2,μ_3,μ_4),其中(μ_1,μ_2,μ_3,μ_4,λ_4,λ_5,.,λ_m)是可实现的。
英文摘要:
Given a list of complex numbers σ:=(λ_1,λ_2,...,λ_m), we say that σ is realisable if σ is the spectrum of some (entrywise) nonnegative matrix. The Nonnegative Inverse Eigenvalue Problem (or NIEP) is the problem of categorising all realisable lists. Given a realisable list (ρ,λ_2,λ_3,...,λ_m), where ρ is the Perron eigenvalue and λ_2 is real, we find families of lists (μ_1,μ_2,...,μ_n), for which (μ_1,μ_2,...,μ_n,λ_3,λ_4,...,λ_m) is realisable. In addition, given a realisable list (ρ,α+iβ,α-iβ,λ_4,λ_5,...,λ_m), where ρ is the Perron eigenvalue and α and β are real, we find families of lists (μ_1,μ_2,μ_3,μ_4), for which (μ_1,μ_2,μ_3,μ_4,λ_4,λ_5,...,λ_m) is realisable.
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。