70 citations · 210 across the 21 of their papers we have counts for
21 papers
Fitting without fittings
Johanna Bimmermann, Bernd Stratmann, Kai Zehmisch
We show that all symplectically aspherical fillings of the unit cotangent bundle of a given odd-dimensional sphere are diffeomorphic to the corresponding unit co-disc bundle. The c…
Removing parametrized rays symplectically
Bernd Stratmann
Extracting isolated rays from a symplectic manifold result in a manifold symplectomorphic to the initial one. The same holds for higher dimensional parametrized rays under an addit…
Nowhere vanishing primitive of a symplectic form
Bernd Stratmann
Let be a manifold with an exact symplectic form . Then there is a nowhere vanishing primitive for , i.e. .
Invariant Kähler potentials and symplectic reduction
Peter Heinzner, Bernd Stratmann
For a proper Hamiltonian action of a Lie group on a Kähler manifold with momentum map we show that the symplectic reduction is a normal complex space.…
On the asymptotics of the -Farey transfer operator
Johannes Kautzsch, Marc Kesseböhmer, Tony Samuel +1
We study the asymptotics of iterates of the transfer operator for non-uniformly hyperbolic -Farey maps. We provide a family of observables which are Riemann integrable, locally…
Upper estimates for stable dimensions of fractal sets with variable number of foldings
Eugen Mihailescu, Bernd Stratmann
For a hyperbolic map f on a saddle type fractal Lambda with self-intersections, the number of f- preimages of a point x in Lambda may depend on x. This makes estimates of the stabl…