## What is/are Mimo Pure Feedback?

Mimo Pure Feedback - The nonaffine functions do not need to be differentiable, and the bounded condition of unknown nonaffine functions is relaxed such that only a more general semibounded assumption is required as the controllability condition of the considered MIMO pure-feedback system.^{[1]}The control design for MIMO pure-feedback nonlinear systems researched is much more complex than the SISO cases, and the presence of in-differentiable non-affine functions considered in this paper makes the control design even more difficult.

^{[2]}