3 papers
math.SG2026
Contactomorphic vertically convex domains
Jan Eyll, Jonas Fritsch, Kai Zehmisch
We consider the standard Darboux space equipped with the radial symmetric contact form. We study co-orientation preserving contactomorphisms between relatively compact domains up t…
math.SG2025
Connected sums of Brieskorn contact -spheres
Florian Buck, Kai Zehmisch
In dimension , the contact connected sum of Brieskorn contact spheres is, in general, not a Brieskorn contact sphere.
math.SG2025
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…