On the concept of switching nonlinearity (a comment on "Switching control of linear systems for generating chaos" by X. Liu, K-L. Teo, H. Zhang and G. Chen)
arXiv:0803.3132
Abstract
It is explained and stressed that the chaotic states in [1] are obtained by means of nonlinear switching.
2 pages, It is a comment on a published work, but the point is theoretically basic; I explain that the system is nonlinear