2 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.DG2025
Stability of systolic inequalities for the Möbius strip and Klein bottle
Jan Eyll
The systolic area of a nonsimply connected compact Riemannian surface is defined as its area divided by the square of the systole, where the systole is equal to…