All primitive strongly regular graphs except four are hyperenergetic

作者：Panigrahi Pratima; Mohapatra R N^*

来源：Applied Mathematics Letters, 2011, 24(12): 1995-1997.

DOI：10.1016/j.aml.2011.05.026

• Strongly regular graphs
• Eigenvalues
• Graph energy

The energy of a graph G, denoted by E(G), is the sum of the absolute values of the eigenvalues of G. If G is a graph on n vertices and E(G) > 2(n - 1), then G is called a hyperenergetic graph. In this paper, we prove that all primitive strongly regular graphs except srg(5, 2, 0, 1), srg(9, 4, 1, 2), srg(10, 3, 0, 1), and srg(16, 5, 0, 2) are hyperenergetic.

• 出版日期2011-12