4 ms·
See also: http://www.nature.com/news/the-bicycle-problem-that-nearly-broke-mathematics-1.20281 http://www.nature.com/news/the-bicycle-problem-that-nearly-b...
by DrScump 10y ago
See also:
http://www.nature.com/news/the-bicycle-problem-that-nearly-broke-mathematics-1.20281 http://www.nature.com/news/the-bicycle-problem-that-nearly-b...