On the Strong Circuit Uniqueness and its Application to the Circuit Characterization of Graphs

E.J. Farrell 1, J.M. Guo 2, Z.Y. Guo 3
1The Centre For Graph Polynomials Department of Mathematics The University of the West Indies St.Augustine, Trinidad
2 Department of Applied Mathematics Tongji University Shanghai, China
3Department of Mathematics Huazhong University of Science and Technology Wuhan, China

Abstract

On the basis of circuit uniqueness, the concept of strong circuit uniqueness is introduced, and some graphs with the property of strong circuit uniqueness are identified. The results are then used to prove successfully the circuit uniqueness of the graphs \(K_m \cup K_n\) and \(K_{m,n}\). This represents an improvement on the previous papers on the same subject.