Let B(n, g) be the class of bicyclic graphs on n vertices with girth g. Let B 1 (n, g) be the subclass of B(n, g) consisting of all bicyclic graphs with two edge-disjoint cycles and B 2 (n, g) = B(n, g) \ B 1 (n, g). This paper determines the unique graph with the maximal Laplacian spectral radius a
Maximizing the spectral radius of bicyclic graphs with fixed girth
β Scribed by Mingqing Zhai; Yarong Wu; Jinlong Shu
- Publisher
- Elsevier Science
- Year
- 2009
- Tongue
- English
- Weight
- 248 KB
- Volume
- 431
- Category
- Article
- ISSN
- 0024-3795
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β¦ Synopsis
Let B(n, g) be the set of bicyclic graphs on n vertices with girth g. In this paper, we determine the unique graph with the maximal spectral radius among all graphs in B(n, g). Moreover, the maximal spectral radius is a decreasing function on g.
π SIMILAR VOLUMES
Restricted to the bicyclic graphs with prescribed degree sequences, we determine the (unique) graph with the largest spectral radius with respect to the adjacency matrix.
A connected graph of order n is bicyclic if it has n + 1 edges. He et al. [C.X. He, J.Y. Shao, J.L. He, On the Laplacian spectral radii of bicyclic graphs, Discrete Math. 308 (2008) 5981-5995] determined, among the n-vertex bicyclic graphs, the first four largest Laplacian spectral radii together wi