数学物理学报 ›› 1997, Vol. 17 ›› Issue (S1): 114-119.

• 论文 • 上一篇    下一篇

Pn(n≥2)是不可约路的判定方法

张秉儒   

  1. 青海教育学院数学系 西宁 810008
  • 收稿日期:1996-05-10 修回日期:1996-08-12 出版日期:1997-12-26 发布日期:1997-12-26

Method of Determing Irreducible Paths

Zhang Bingru   

  1. Qinghai Teacher's college, Xining 810008
  • Received:1996-05-10 Revised:1996-08-12 Online:1997-12-26 Published:1997-12-26

摘要: Pn表示有nn点的路.h(Pn,x)表示Pn的伴随多项式,则h(Pn,1)=Σknn-kk是Fibonacci数,该文证明了Fibonacci数是素数的充要条件.进而给出了Pn(n ≥ 2)是不可约路的充分条件,这对利用伴随多项式去分析图的色性奠定了理论基础.

关键词: 色多项式, 伴随多项式, 斐波纳契数, 不可约路

Abstract: let unknn-kk and Pn denote the path with n vertices. In this paper, it is proved that Pn are shown to be irreducible path if n=3 of n=q-1, where q ≥ 3 are prime and[(uq-1-1) + 1]/uq-1 are positive integer.

Key words: adjoint polynomial, irreducible path