On a theorem of Preissmann
On a theorem of Preissmann
PROOF. Let xoEM and o CM such that 7r(xo) =xo. Let Z be a path in M joining xo to a(xo) and let C be its projection into M. According to Bishop and Crittenden [1, p. 293] there is a closed geodesic in every free homotopy class of loops on …