Kolmogorov variation: KAM with knobs (\`a la Kolmogorov)
Dynamical Systems
2023-04-05 v2
Abstract
In this paper we reconsider the original Kolmogorov normal form algorithm with a variation on the handling of the frequencies. At difference with respect to the Kolmogorov approach, we do not keep the frequencies fixed along the normalization procedure. Besides, we select the frequencies of the final invariant torus and determine a posteriori the corresponding starting ones. In particular, we replace the classical translation step with a change of the frequencies. The algorithm is based on the original scheme of Kolmogorov, thus exploiting the fast convergence of the Newton-Kantorovich method.
Cite
@article{arxiv.2109.06345,
title = {Kolmogorov variation: KAM with knobs (\`a la Kolmogorov)},
author = {Marco Sansottera and Veronica Danesi},
journal= {arXiv preprint arXiv:2109.06345},
year = {2023}
}