File:Фрактал Ляпунова.GIF 
File:2‑dimensional repetitive Lyapunov‑fractal pattern.GIF
The aim of Wikimedia Commons is to provide a media file repository:
- that makes available public domain and freely-licensed educational media content to all, and
- that acts as a common repository for the various projects of the Wikimedia Foundation.
The expression "educational" is to be understood according to its broad meaning of "providing knowledge; instructional or informative"