User mark - MathOverflow most recent 30 from http://mathoverflow.net 2013-05-20T07:58:00Z http://mathoverflow.net/feeds/user/8845 http://www.creativecommons.org/licenses/by-nc/2.5/rdf http://mathoverflow.net/questions/8825/how-many-different-representations-of-pi-can-we-come-up-with/36959#36959 Answer by mark for How many different representations of pi can we come up with? mark 2010-08-28T09:04:18Z 2010-08-28T09:04:18Z <p>check this out <a href="http://www.telegraph.co.uk/news/newstopics/howaboutthat/2144652/Most-complex-crop-circle-ever-discovered-in-British-fields.html" rel="nofollow">http://www.telegraph.co.uk/news/newstopics/howaboutthat/2144652/Most-complex-crop-circle-ever-discovered-in-British-fields.html</a></p>