Title: Dynamics control by a time-varying feedback
Authors: A.A. Agrachev, M. Caponigro
Journal title: Dynamical and Control Systems
Year: 2010
Volume: 16
Pages: 149-162
Abstract:
We consider a smooth bracket generating control-affine system in 
and show that any orientation preserving diffeomorphism of can be approximated, in the very strong sense, by a diffeomorphism included in the flow generated by a time-varying feedback control which is polynomial with respect to the state variables and trigonometricpolynomial with respect to the time variable .
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