Abstract
The energy of a graph is defined to be the sum of absolute values
of eigenvalues of its adjacency matrix. The Sombor index of a graph
is a novel topological indexof a graph. In this paper, we study
relations between energy and Sombor index of a graph \(G\) in
terms of its degrees. Moreover, we give upper bound for a regular
graph in terms of its Sombor index.
