Wiener polarity index of quasi-tree molecular structures

Open Journal of Mathematical Sciences

Wei Gao¹  Li Liang²  Zihao Tang³ 

[1] School of Information Science and Technology, Yunnan Normal University, Kunming 650500, China.;School of Mathematics, Yunnan Normal University, Kunming 650500, China.;School of Mathematics, Yunnan Normal University, Kunming 650500, China;

关键词: theoretical chemistry;    molecular graph;    Wiener polarity index;    quasi-tree.;   

DOI  :  10.30538/oms2018.0018

来源: DOAJ

【 摘 要 】

As an important branch of theoretical chemistry, chemical index calculation has received wide attention in recent years. Its theoretical results have been widely used in many fields such as chemistry, pharmacy, physics, biology, materials, etc. and play a key role in reverse engineering. Its basic idea is to obtain compound characteristics indirectly through the calculation of topological index. As a basic structure, quasi-tree structures are widely found in compounds. In this paper, we obtain the maximal value and the second smallest value of quasi-tree graphs of order n.

【 授权许可】

Unknown