基于顶点度拓扑指标的极值单环图

IF 2.9 2区 化学 Q2 CHEMISTRY, MULTIDISCIPLINARY Match-Communications in Mathematical and in Computer Chemistry Pub Date : 2022-04-01 DOI:10.46793/match.88-3.481c
Roberto Cruz, J. Rada, Wilson Sanchez
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引用次数: 4

摘要

本文给出了判定顶点上的环和星与环的聚并是否是顶点度拓扑索引的极值单环图的一般判据。我们证明了许多关于单环图上VDB拓扑指标极值的著名结果可以作为我们的特殊情况得到。此外,我们还得到了VDB拓扑指标极值的新结果,如广义几何算术指标、广义原子键连通性指标及其指数等。
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Extremal Unicyclic Graphs with Respect to Vertex-Degree-Based Topological Indices
n this paper we present a general criteria to decide when the cycle on vertices and , the coalescence of the star with the cycle , are extremal unicyclic graphs of a vertex-degree-based (VDB) topological index. We show that many of the well known results on extremal values of VDB topological indices over unicyclic graphs can be obtained as particular cases of ours. Moreover, we obtain new results on extremal values of VDB topological indices, such as the generalized Geometric-Arithmetic indices, the generalized Atom-Bond-Connectivity indices, and its exponentials, among others.
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来源期刊
CiteScore
4.40
自引率
26.90%
发文量
71
审稿时长
2 months
期刊介绍: MATCH Communications in Mathematical and in Computer Chemistry publishes papers of original research as well as reviews on chemically important mathematical results and non-routine applications of mathematical techniques to chemical problems. A paper acceptable for publication must contain non-trivial mathematics or communicate non-routine computer-based procedures AND have a clear connection to chemistry. Papers are published without any processing or publication charge.
期刊最新文献
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