Auto-similarité de l'ensemble de Mandelbrot près du point de Feigenbaum -1,401155 ; le facteur d'agrandissement d'un cycle au suivant est la constante 4,66920160910299067185320382…

http://fr.wikipedia.org/wiki/Nombres_de_Feigenbaum

Manifestation of chaos in population boom and bust. Centre: the bifurcation diagram with the bulbs of the

corresponding Mandelbrot set, showing identical periodicities.

Top row: Corresponding Julia sets as boundary 
between inner and outer basins highlighted by their level sets.

Right Period 2 Julia set by modified inverse iteration.

Bottom row. Dynamics by iterating y = f(x) and x = y. At 4.5 the domain fragments into a fractal Cantor set.

http://www.dhushara.com/DarkHeart/DarkHeart.htm#Anchor-MegaPOV-37516