Academic Editor: Magdy A. Ezzat
Copyright © 2013 Weizhong Wang and Dong Yang. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Let be a simple graph. The incidence energy ( for short) of is defined as the sum of the singular values of the incidence matrix. In this paper, a new upper bound for of graphs in terms of the maximum degree is given. Meanwhile, bounds for of the line graph of a semiregular graph and the paraline graph of a regular graph are obtained.