10 citations · 11 across the 2 of their papers we have counts for
3 papers
math.DS2021★ 1 cited
KAM below
Jürgen Pöschel
We consider the KAM theory for rotational flows on an -dimensional torus. We show that if its frequencies are diophantine of type , then Moser's KAM theory with parameters…
math.DS2017
On the Siegel-Sternberg linearization theorem
Jürgen Pöschel
We establish a general version of the Siegel-Sternberg linearization theorem for ultradiffentiable maps which includes the analytic case, the smooth case and the Gevrey case. It ma…
math.AP2009★ 10 cited
Normal form theory for the NLS equation
Benoît Grébert, Thomas Kappeler, Jürgen Pöschel
We consider the nonlinear Schrodinger equation with a cubic nonlinearity on the circle, which is known to represent an integrable Hamiltonian system. We construct a global coordina…