49 citations · 253 across the 30 of their papers we have counts for
4 papers · 1 filter
Smooth perfectness through decomposition of diffeomorphisms into fiber preserving ones
Stefan Haller, Josef Teichmann
We show that on a closed smooth manifold equipped with fiber bundle structures whose vertical distributions span the tangent bundle, every smooth diffeomorphism of …
Non-contractible periodic trajectories of symplectic vector fields, Floer cohomology and symplectic torsion
Dan Burghelea, Stefan Haller
For a closed symplectic manifold , a compatible almost complex structure , a 1-periodic time dependent symplectic vector field and a homotopy class of closed curves $…
Totally geodesic subgroups of diffeomorphisms
Stefan Haller, Josef Teichmann, Cornelia Vizman
We determine the Riemannian manifolds for which the group of exact volume preserving diffeomorphisms is a totally geodesic subgroup of the group of volume preserving diffeomorphism…
On the topology and analysis of a closed one form. I (Novikov's theory revisited)
Dan Burghelea, Stefan Haller
We consider systems with a closed smooth manifold, a real valued closed one form and a Riemannian metric, so that is a Morse-Smale pair, Definition~2.…