科研之友
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摘要
Chemical compounds and drugs are often modeled as graphs where each vertex represents an atom of molecule and covalent bounds between atoms are represented by edges between the corresponding vertices. This graph derived from a chemical compounds is often called its molecular graph and can be different structures. An indicator defined over this molecular graph, the Wiener index, has been shown to be strongly correlated to various chemical properties of the compounds. The Wiener index of a graph is defined as the sum of distances between all pairs of vertices of the graph. It has been found extensive applications in chemistry. In this paper, we determine the Wiener index of gear fan graph, gear wheel graph and their r-corona graphs.
- 出版日期2014-6
- 单位云南师范大学; 中国医学科学院医学生物学研究所; 中国医学科学院北京协和医院
