Orbit equivalence of linear systems on manifolds and semigroup actions   on homogeneous spaces
  In this paper we introduce the notion of orbit equivalence for semigroup actions and the concept of generalized linear control system on smooth manifold. The main goal is to prove that, under certain conditions, the semigroup system of a generalized linear control system on a smooth manifold is orbit equivalent to the semigroup system of a linear control system on a homogeneous space. 
Rafael M. Hungaro, Osvaldo G. Rocio and Alexandre J. Santana
math.OC math.DS