TY - JOUR
A2 - Nashine, Hemant Kumar
AU - Shooshtari, Hajar
AU - Rodriguez, Jonnathan
AU - Jahanbani, Akbar
AU - Shokri, Abbas
PY - 2021
DA - 2021/09/13
TI - Energy of Nonsingular Graphs: Improving Lower Bounds
SP - 4064508
VL - 2021
AB - Let G be a simple graph of order n and A be its adjacency matrix. Let λ1≥λ2≥…≥λn be eigenvalues of matrix A. Then, the energy of a graph G is defined as εG=∑i=1nλi. In this paper, we will discuss the new lower bounds for the energy of nonsingular graphs in terms of degree sequence, 2-sequence, the first Zagreb index, and chromatic number. Moreover, we improve some previous well-known bounds for connected nonsingular graphs.
SN - 2314-4629
UR - https://doi.org/10.1155/2021/4064508
DO - 10.1155/2021/4064508
JF - Journal of Mathematics
PB - Hindawi
KW -
ER -