35 citations · 35 across the 2 of their papers we have counts for
2 papers
math.CA2016
On ultradifferentiable functions
Jürgen Pöschel
We give complete and exact descriptions of spaces of ultradifferentiable functions that are closed under composition with either holomorphic or ultradifferentiable functions -- whi…
math.DS2009★ 35 cited
KAM à la R
Jürgen Pöschel
Recently Rüssmann proposed a new new variant of KAM theory based on a slowly converging iteration scheme. It is the purpose of this note to make this scheme accessible in an even s…