摘要
In this paper, we investigate the average distance of trees, prove Conjecture592 presented by the computer program Graffiti, and present two infinite sets of counterex-amples to the Conjectures 583 and 587, respectively.
In this paper, we investigate the average distance of trees, prove Conjecture592 presented by the computer program Graffiti, and present two infinite sets of counterex-amples to the Conjectures 583 and 587, respectively.
基金
Research supported by National Natural Science Foundation of China.
