Examples of Feigenbaum Julia sets with small Hausdorff dimension
classification
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closecombinatoricsdimensionexampleshausdorffinfinitelyjuliaquadratic
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We give examples of infinitely renormalizable quadratic polynomials $F_c: z\maps to z^2+c$ with stationary combinatorics whose Julia sets have Hausdorff dimension arbitrar y close to 1. The combinatorics of the renormalization involved is close to the Chebyshev one . The argument is based upon a new tool, a ``Recursive Quadratic Estimate'' for the Poincar\'e series of an infinitely re normalizable map.
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