Mikhail Lyubich

  1. Probabilistic Universality in two-dimensional Dynamics.

    Authors: Mikhail Lyubich, Marco Martens
    Subjects: Dynamical Systems
    Abstract

    In this paper we continue to explore infinitely renormalizable H\'enon maps
    with small Jacobian. It was shown in [CLM] that contrary to the one-dimensional
    intuition, the Cantor attractor of such a map is non-rigid and the conjugacy
    with the one-dimensional Cantor attractor is at most 1/2-H\"older. Another
    formulation of this phenomenon is that the scaling structure of the H\'enon
    Cantor attractor differs from its one-dimensional counterpart. However, in this
    paper we prove that the weight assigned by the canonical invariant measure to
    these bad spots tends to zero on microscopic scales.

  2. Renormalisable Henon-like Maps and Unbounded Geometry.

    Authors: Peter Hazard, Mikhail Lyubich, Marco Martens
    Subjects: Dynamical Systems
    Abstract

    We show that given a one parameter family $F_b$ of strongly dissipative
    infinitely renormalisable H\'enon-like maps, parametrised by a quantity called
    the `average Jacobian' $b$, the set of all parameters $b$ such that $F_b$ has a
    Cantor set with unbounded geometry has full Lebesgue measure.

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