Rescaling conjecture for the MCheb polynomial

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Let PMCheb(z):=z2−1.87450961730020085…P_{\rm MCheb}(z):=z^2-1.87450961730020085\ldots be the real quadratic polynomial constructed so that its first-return combinatorics imitate those of the Chebyshev polynomial f−2(z)=z2−2f_{-2}(z)=z^2-2. Consider the nest pieces of PMChebP_{\rm MCheb} and the functions induced by their first return maps. Rescaling conjecture for the MCheb polynomial. There are suitable rescalings of the nest pieces of PMChebP_{\rm MCheb} such that the induced functions converge to f−2f_{-2} and the properly rescaled pieces converge to the interval [−2,2][-2,2] in the Hausdorff topology. The conjecture asks whether the combinatorial analogy with the Chebyshev polynomial persists metrically, despite the lack of interior in the filled Julia set K−2K_{-2}; the methods developed for QQ-recurrent polynomials do not establish this behavior.

References

Primary source

Rodrigo A. Pérez, “Geometry of Q-recurrent maps”, arXiv:math/0311359 (2003).

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