Molecular graph;
Atom-bond connectivity (ABC) index;
Modified second Zagreb index;
D O I:
10.1016/j.dam.2010.03.006
中图分类号:
O29 [应用数学];
学科分类号:
070104 ;
摘要:
The recently introduced atom-bond connectivity (ABC) index has been applied up until now to study the stability of alkanes and the strain energy of cycloalkanes. Furtula et al. (2009) [3] obtained extremal ABC values for chemical trees, and also, it has been shown that the star K-1,K-n-1, has the maximal ABC value of trees. In this paper, we present the lower and upper bounds on ABC index of graphs and trees, and characterize graphs for which these bounds are best possible. (C) 2010 Elsevier B.V. All rights reserved.
机构:
Univ Split, Fac Sci, HR-21000 Split, Croatia
Inst R Boskov, HR-10002 Zagreb, CroatiaShahid Rajaee Teacher Training Univ, Fac Sci, Dept Math, Tehran 16785136, Iran
Graovac, Ante
Ghorbani, Modjtaba
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机构:
Shahid Rajaee Teacher Training Univ, Fac Sci, Dept Math, Tehran 16785136, IranShahid Rajaee Teacher Training Univ, Fac Sci, Dept Math, Tehran 16785136, Iran