9 citations · 15 across the 5 of their papers we have counts for
6 papers · 1 filter
Torsion, as a function on the space of representations
Dan Burghelea, Stefan Haller
Riemannian Geometry, Topology and Dynamics permit to introduce partially defined holomorphic functions on the variety of representations of the fundamental group of a manifold. The…
Laplace transform, dynamics and spectral geometry
Dan Burghelea, Stefan Haller
We consider vector fields on a closed manifold with rest points of Morse type. For such vector fields we define the property of exponential growth. A cohomology class $ξ\in…
Non-linear Grassmannians as coadjoint orbits
Stefan Haller, Cornelia Vizman
For a given manifold we consider the non-linear Grassmann manifold of -dimensional submanifolds in . A closed -form on gives rise to a closed 2-form…
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 …
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.…
On the Perfectness of Nontransitive Groups of Diffeomorphisms
Stefan Haller, Tomasz Rybicki
It is proven that the identity component of the group preserving the leaves of a generalized foliation is perfect. This shows that a well-known simplicity theorem on the diffeomorp…