【摘要】 袁西英等运用树的一些结构变换和运算,排出了具有最小Laplace谱半径的前7棵n阶树.基于此,进一步运用图的嫁接、剖分和收缩等运算,继续这个顺序,将具有最小Laplace谱半径的n阶树从第8棵排至第11棵,从而得到了Laplace谱半径最小的前11棵n阶树.更多还原

【Abstract】 Some structure transformations and operations on the trees are used by YUAN Xiying to obtain the ordering of the first seven trees of order n with the smallest Laplacian spectral radii.The operatons of grafting,subdiusion and antracting on the trees are further used to continue this ordering and extend this ordering to the 11th tree.更多还原