2013/09/26 by Mingqing Zhai, Huiqiu Lin, Zhai, Mingqing +3 · 1 citation
Mathematics · #Graph theory and applications #Finite Group Theory Research #Limits and Structures in Graph Theory
paper · pdf · doi:10.48550/arxiv.1309.6700
Let G be a graph with n vertices and λn(G) be the least eigenvalue of its adjacency matrix of G. In this paper, we give sharp bounds on the least eigenvalue of graphs without given pathes or cycles and determine the extremal graphs. This result gives spectral conditions for the existence of specified paths and cycles in graphs.