Victor Varin
Published 2012-02-21, updated 2012-02-27Version 2
We compute the spectrum of the Feigenbaum period-doubling operator in the space of bounded analytical functions in an ellipse. The spectral properties of the period-doubling operator in this space are not the same as in the space of even analytical functions. In particular, it was found that the dimension of the unstable manifold is not one (Feigenbaum's conjecture), but three. We analyze several articles devoted to this problem and compare different approaches and algorithms.
Comments: This article was declined by "Nonlinearity" on the ground of "Conflict of Interests", since it criticizes implicitly some members of the editorial board
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Tangent Space of the Stable And Unstable Manifold of Anosov Diffeomorphism on 2-Torus
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