Nonautonomous saddle-node bifurcations: Random and deterministic forcing
Nonautonomous saddle-node bifurcations: Random and deterministic forcing
复制标题
非自主鞍节点分叉:随机和确定性强迫
DOI:
10.1016/j.jde.2012.03.016
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发表时间:
2012
影响因子:
2.4
通讯作者:
Anagnostopoulou V
中科院分区:
文献类型:
--
作者:
Anagnostopoulou V
We study the effect of external forcing on the saddle-node bifurcation pattern of interval maps. By replacing fixed points of unperturbed maps by invariant graphs, we obtain direct analogues to the classical result both for random forcing by measure-preserving dynamical systems and for deterministic forcing by homeomorphisms of compact metric spaces. Additional assumptions like ergodicity or minimality of the forcing process then yield further information about the dynamics. The main difference to the unforced situation is that at the critical bifurcation parameter, two alternatives exist. In addition to the possibility of a unique neutral invariant graph, corresponding to a neutral fixed point, a pair of so-called pinched invariant graphs may occur. In quasiperiodically forced systems, these are often referred to as ‘strange non-chaotic attractors’. The results on deterministic forcing can be considered as an extension of the work of Novo, Núñez, Obaya and Sanz on nonautonomous convex scalar differential equations. As a by-product, we also give a generalisation of a result by Sturman and Stark on the structure of minimal sets in forced systems.
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DOI:
--
发表时间:
2008
期刊:
影响因子:
--
作者:
C. Núñez;R. Obaya
通讯作者:
R. Obaya
影响因子:
0.9
作者:
J. Stark
通讯作者:
J. Stark
DOI:
--
发表时间:
2002
期刊:
影响因子:
--
作者:
Russell Johnson;P. Kloeden;R. Pavani
通讯作者:
R. Pavani
DOI:
--
发表时间:
2003
期刊:
Proceedings of the Royal Society of Edinburgh: Section A Mathematics
影响因子:
--
作者:
A. Alonso;R. Obaya
通讯作者:
R. Obaya
DOI:
--
发表时间:
2004
期刊:
影响因子:
--
作者:
Sylvia Novo;R. Obaya;Ana M. Sanz
通讯作者:
Ana M. Sanz