Abstract
Abstract
The Gutman index is parameter related to the degree and the distance in a graph. In this paper, the values of the vertex-Gutman index and the Gutman index of the wheel graphs are calculated, and the extremum of the vertex-Gutman index are studied. We obtained that, in the wheel graph, the vertex-Gutman index reaches the maximum at the center and the minimum at the vertices on the wheel.
Subject
General Physics and Astronomy
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