On Minimum Algebraic Connectivity of Tricyclic Graphs

Document Type : Original Scientific Paper


‎Faculty of Mathematical Science, ‎Department of Pure Mathematics,‎ ‎University of Kashan,‎ ‎Kashan 87317-51167‎, ‎I. R. Iran



‎Consider a simple‎, ‎undirected graph $ G=(V,E)$‎, ‎where $A$ represents the adjacency matrix and $Q$ represents the Laplacian matrix of $G$‎. ‎The second smallest eigenvalue of Laplacian matrix of $G$ is called the algebraic connectivity of $G$‎. ‎In this article‎, ‎we present a Python program for studying the Laplacian eigenvalues of a graph‎. ‎Then‎, ‎we determine the unique graph of minimum algebraic connectivity in the set of all tricyclic graphs‎.


Main Subjects

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