School of Mathematics and Computer Science, Guangxi University for Nationalities, Nanning Guangxi 530006, China
Copyright © 2010 Yiliang Liu and Jitai Liang. 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.
We give a counter example to the comparison principle for the multipoint BVPs (by
Xuxin Yang, Zhimin He, and Jianhua Shen, in Mathematical Problems in Engineering, Volume 2009,
Article ID 258090, doi:10.1155/2009/258090). Then we suggest and prove a corrected version of
the comparison principle.