Convergence rates for sequences of bifurcation parameters of nonautonomous dynamical systems generated by flat top tent maps

• Autor(a) principal: Moura E Silva, Teresa
• Data de Publicação: 2020
• Outros Autores: Silva, Luis, Fernandes, Sara
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
• Texto Completo: http://hdl.handle.net/10400.21/11011
• topic: Nonautonomous periodic systems; Rates of convergence; Stunted tent maps; Symbolic dynamics

In this paper we study a 2-parameter family of 2-periodic nonautonomous systems generated by the alternate iteration of two stunted tent maps. Using symbolic dynamics, renormalization and star product in the nonautonomous setting, we compute the convergence rates of sequences of parameters obtained through consecutive star products/renormalizations, extending in this way Feigenbaum's convergence rates. We also define sequences in the parameter space corresponding to anharmonic period doubling bifurcations and compute their convergence rates. In both cases we show that the convergence rates are independent of the initial point, concluding that the nonautonomous setting has universal properties of the type found by Feigenbaum in families of autonomous systems.