Abstract
We establish rigorous bounds for the unstable eigenvalue of the period-doubling renormalization operator for asymmetric unimodal maps. Herglotz-function techniques and cone invariance ideas are used. Our result generalizes an established result for conventional period doubling.
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Communicated by G. Gallavotti
This research is supported by The Leverhulme Trust (grant number F/00144/W).
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Mestel, B., Osbaldestin, A. & Tsygvintsev, A. Bounds on the Unstable Eigenvalue for the Asymmetric Renormalization Operator for Period Doubling. Commun. Math. Phys. 250, 241–257 (2004). https://doi.org/10.1007/s00220-004-1143-2
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DOI: https://doi.org/10.1007/s00220-004-1143-2