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math.DS2026

Galton-Watson processes in dynamical environments

Thomas Morand

We define a model of Galton Watson processes in dynamical environments where the environment evolves according to a dynamical system (X, T). Three behaviours are possible: uniforml…

math.DS2026

Homeomorphism groups of basilica, rabbit and airplane Julia sets

Bruno Duchesne, Matteo Tarocchi

The airplane, the basilica and the Douady rabbit (and, more generally, rabbits with more than two ears) are well-known Julia sets of complex quadratic polynomials. In this paper we…

math.DS20252 cited

Non-convex Mather's theory and the Conley conjecture on the cotangent bundle of the torus

Claude Viterbo

The aim of this paper is to use the methods and results of symplectic homogenization (see [V4]) to prove existence of periodic orbits and invariant measures with rotation number de…

math.DS20254 cited

Sparsity of postcritically finite maps of and beyond: A complex analytic approach

Thomas Gauthier, Johan Taflin, Gabriel Vigny

An endomorphism of degree is said to be postcritically finite (or PCF) if its critical set is preperiodic, i.e. if there…

math.DS2025

Numerical bounds on the regularity of an invariant function: Probability of extinction of Galton-Watson processes in dynamical environments

Thomas Morand

We study the Lyapunov exponents of models that are close to skew product systems over a C__ uniformly expanding transformation of the circle. For a continuous fibre map , analy…