Abstract
where the drift vector field X an infinitesimal automorphism of G, i.e. the one parameter group of X is a subgroup of Aut(G), the Lie group of automorphisms of G.And the control vector fields yi,j = 1,2, ... k are elements of the Lie algebra L(G) of G, i.e. are right-invariant vector fields on G, hE Hom(G,G 1 ).For this class of systems we establish without proof the following results:1) The Lie algebra rank condition characterizes transitivity, [2].2) The rank condition; it is sufficient for controllability, [2].In particular, we extend the Kalman's Theorem: 3) The rank condition characterizes controllability when G is an Abelian connected Lie group, [2].4) The observability rank condition characterizes the local observability, [1]