Complexity and integrability in 4D bi-rational maps with two invariants
Exactly Solvable and Integrable Systems
2019-05-31 v2
Abstract
In this letter we give fourth-order autonomous recurrence relations with two invariants, whose degree growth is cubic or exponential. These examples contradict the common belief that maps with sufficiently many invariants can have at most quadratic growth. Cubic growth may reflect the existence of non-elliptic fibrations of invariants, whereas we conjecture that the exponentially growing cases lack the necessary conditions for the applicability of the discrete Liouville theorem.
Cite
@article{arxiv.1808.04942,
title = {Complexity and integrability in 4D bi-rational maps with two invariants},
author = {G. Gubbiotti and N. Joshi and D. T. Tran and C-M. Viallet},
journal= {arXiv preprint arXiv:1808.04942},
year = {2019}
}
Comments
16 pages, 2 figures