树的Zagreb指标的上界  

Upper Bound of the Zagreb Index of Trees

作　　者：李树立 LI Shuli(School of Mathematical and Computer Sciences,Quanzhou Normal University, Quanzhou 362000 ,Chin)

机构地区：[1]泉州师范学院数学与计算机科学学院,福建泉州362000

出　　处：《厦门大学学报（自然科学版）》2018年第4期536-538,共3页Journal of Xiamen University：Natural Science

基　　金：国家自然科学基金(11701324);福建省中青年教师教育科研项目(JAT170473);泉州师范学院青年博士预研基金(2016QBKJ02)

摘　　要：研究树的Zagreb指标,得到了给定阶及最大度的树的第一类Zagreb指标的上界,证明了所得到的上界优于Das等人给出的上界.The Zagreb index of trees will be studied and an upper bound of the first Zagreb index of trees with given orders and maximum degrees will be obtained in this paper.It is also proved that this upper bound is more superior than that reported by Das et al.

关 键 词：ZAGREB指标 树 最大度 

分 类 号：O157.5[理学—数学]