Hommage a Mandelbrot -2eme

Since there is no possibility to add something to Valery's nice post with the animated fractal
( http://communities.ptc.com/videos/1467 ) and since I haven't seen the link in Wiki under item "fractal",
some one may want to have a look to the 6th episode in :

http://www.dimensions-math.org/Dim_fr.htm [ Chapter 6 ]

Available in 8 languages, including russian or arabian.

... or same could have been under thread << Math sympa pour tous >> or even << Geometrie et nombres complexes pour tous >> ...