Diffeomorphisms of Geod(T2)
Tuesday, March 15, 2022
 
In this note we compute the group of diffeomorphisms of the sapce of geodesic trajectories of the 2-torus. It is an example of a non trivial Klein stratification, despite a poor D-topology, in which not all strata are manifolds. Ref. http://math.huji.ac.il/~piz/documents/DBlog-Rmk-DOGT2.pdf