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Bifurcation of an attracting invariant circle: a Denjoy attractor
Published online by Cambridge University Press: 19 September 2008
Abstract
We construct an example of a C∞ diffeomorphism of an annulus into itself which has an attracting invariant circle such that the map restricted to this circle has no periodic points and no dense orbits. By studying two parameter families of maps of the plane which undergo Hopf bifurcation, particularly the set of parameter values for which the rotation number is irrational, we see that the above example can be considered as a ‘worst case’ of the loss of smoothness of an attracting invariant circle without periodic orbits.
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- Copyright © Cambridge University Press 1983
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