只有与G同构的图才有相同的谱,则称图G称为谱唯一确定的.本文证明了,K_n-E(lP_2)和‰K_n-E(K_1l)是谱唯一确定的.
A graph G is said to be determined by its spectrum if any graph having the same spectrum as that of G is isomorphic to G. In this paper, it was proved that K_n E(lP2) and K_n E(KI,z) axe determined by their spectra, respectively.