Trees with Extreme Values of Second Zagreb Index and Coindex

نویسندگان
Sheikholeslami, Seyed Mahmoud ID 1
Rasi, Reza ID 2
Behmaram, Afshin ID 3

1 Department of Mathematics, Azarbaijan Shahid Madani University, Tabriz, I. R. Iran

2 Department of Mathematics, Azarbaijan Shahid Madani University, Tabriz, I. R. Iran

3 Faculty of Mathematical Sciences, University of Tabriz, Tabriz, I. R. Iran

doi
10.22052/mir.2018.130441.1100
چکیده

In this paper we present a generalization of the aforementioned bound for all trees in terms of the order and maximum degree. We also give a lower bound on the second Zagreb coindex of trees.

کلیدواژه‌ها
Zagreb index‎, ‎second Zagreb index‎, ‎second Zagreb coindex‎, Tree‎