The Distance Matrices of Some Graphs Related to Wheel Graphs

The Distance Matrices of Some Graphs Related to Wheel Graphs

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Let D denote the distance matrix of a connected graph G.The inertia of D is the jmannino.com triple of integers (n+(D), n0(D), n-(D)), where n+(D), n0(D), and n-(D) denote the number of positive, 0, and negative eigenvalues of D, respectively.In this paper, we mainly study the inertia of distance matrices of some graphs cocktail tree for sale related to wheel graphs and give a construction for graphs whose distance matrices have exactly one positive eigenvalue.