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author:

Liu, Jianping (Liu, Jianping.) [1] (Scholars:刘剑萍) | Zheng, Ruiling (Zheng, Ruiling.) [2] | Chen, Jinsong (Chen, Jinsong.) [3] (Scholars:陈锦松) | Liu, Bolian (Liu, Bolian.) [4]

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Abstract:

The general atom bond connectivity index (ABC(alpha)) of a graph G = (V, E) is defined as ABC(alpha)(G) = Sigma(uv is an element of E(G)) (d(u) + d(v) - 2/d(u)d(v))(alpha), where uv is an edge of G, d(u) is the degree of the vertex u, alpha is an arbitrary nonzero real number, and G has no isolated K-2 if alpha < 0. In this paper, we determine the n-vertex (n >= 4) unicyclic graphs with maximal and second-maximal (resp. minimal and second-minimal) ABC(alpha) indices for alpha > 0 (resp. -3 <= alpha < 0). And the n-vertex (n >= 4) bicyclic graphs in which the ABC(alpha) index attains maximal (resp. minimal) value for alpha > 0 (resp. -1 <= alpha < 0) are also obtained.

Keyword:

Community:

  • [ 1 ] [Liu, Jianping]Fuzhou Univ, Coll Math & Comp Sci, Fuzhou 350108, Fujian, Peoples R China
  • [ 2 ] [Zheng, Ruiling]Fuzhou Univ, Coll Math & Comp Sci, Fuzhou 350108, Fujian, Peoples R China
  • [ 3 ] [Chen, Jinsong]Fuzhou Univ, Coll Math & Comp Sci, Fuzhou 350108, Fujian, Peoples R China
  • [ 4 ] [Liu, Bolian]South China Normal Univ, Sch Math Sci, Guangzhou 510631, Guangdong, Peoples R China

Reprint 's Address:

  • 陈锦松

    [Chen, Jinsong]Fuzhou Univ, Coll Math & Comp Sci, Fuzhou 350108, Fujian, Peoples R China

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Source :

MATCH-COMMUNICATIONS IN MATHEMATICAL AND IN COMPUTER CHEMISTRY

ISSN: 0340-6253

Year: 2019

Issue: 2

Volume: 81

Page: 345-360

1 . 9 4 9

JCR@2019

2 . 9 0 0

JCR@2023

ESI Discipline: CHEMISTRY;

ESI HC Threshold:184

JCR Journal Grade:2

CAS Journal Grade:2

Cited Count:

WoS CC Cited Count: 11

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 0

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