Vertex PI Index and Szeged Index of Certain Special Molecular Graphs

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RESEARCH ARTICLE

Vertex PI Index and Szeged Index of Certain Special Molecular Graphs

Li Yan1 Junsheng Li1 , * Open Modal Wei Gao2
Authors Info & Affiliations
The Open Biotechnology Journal • 31 Dec 2014 • RESEARCH ARTICLE • DOI: 10.2174/1874070701408010019

Abstract

The vertex PI index and Szeged index are distance-based topological index which reflect certain structural features of organic molecules. Each structural feature of such organic molecule can be expressed as a graph. In this paper, we determine the vertex PI index and Szeged index of fan molecular graph, wheel molecular graph, gear fan molecular graph, gear wheel molecular graph, and their r-corona molecular graphs.

Keywords: Chemical graph theory, vertex PI index, Szeged index, Fan molecular graph, Wheel molecular graph, Gear fan molecular graph, Gear wheel molecular graph, r-corona molecular graph.