title: Comments on "Discrete-time adaptive backstepping nonlinear control via high-order neural networks".
abstract: The purpose of this comment is to point out some mistakes in the above paper. It is shown that the main results of the paper cannot stand in general. Also, it is pointed out that after some corrections, the proposed control algorithm is still applicable to a more simple system. For simplicity, all the symbols in this comment are the same as those in the above paper.
authors.affiliation: Department of Applied Mathematics, Xidian University, Xi'an 710071, China. wshchen@126.com
authors.forename: Weisheng
authors.initials: W
authors.lastname: Chen