2 papers
math.DS2025
Double flip bifurcations in -symmetric Hamiltonian systems
Konstantinos Efstathiou, Tobias Våge Henriksen, Sonja Hohloch
In this paper we introduce a new bifurcation in Hamiltonian systems, which we call the double flip bifurcation. The Hamiltonian depends on two parameters, one of which controls the…
math.SG2024
On the affine invariant of simple hypersemitoric systems
Konstantinos Efstathiou, Sonja Hohloch, Pedro Santos
Hypersemitoric systems are a class of integrable systems on -dimensional symplectic manifolds which only have mildly degenerate singularities and where one of the integrals indu…