Copyright © 2009 Zhixia Ma and Xiaohu Wang. 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.
A new singular impulsive delay differential inequality is established. Using this
inequality, the invariant and attracting sets for impulsive neutral neural networks with delays are
obtained. Our results can extend and improve earlier publications.