What this year's Abel Prize winner achieved - The Hindu
DynamicalSystemsSIAM on Twitter: "@alexbellos @wjcook For some extra excitement, try a 'Sinai billiard' table. More generally: https://t.co/TK6wnPyiEN https://t.co/XRtNDVZPFV" / Twitter
File:SinaiBilliard.svg - Wikimedia Commons
Der kontrollierte Stoß - Mathelitsch - 2020 - Physik in unserer Zeit - Wiley Online Library