树T(n,d;n-d-k-1,0,…,0,k)的能量

The Energy of T(n,d;n-d-k-1,0,…,0,k)

设λ1,λ2,…,λn是n阶图G的特征值,图G的能量定义为图的特征值的绝对值的和.利用图的特征多项式以及图的偏序关系比较,讨论了树T(n,d;n-d-k-1,0,…,0,k)的能量随参数k的变化依次变化的规律.

The energy of graph G with n vertices is defined as the sum of the absolute valuels of all the eigenvalues of the graph. It discusses the energy of T（ n, d ; n-d-k-1,0,...,0, k） which gradually changes with parameter k.