http://www.arsmathematica.net/2010/10/28/universal-differential-equation/ Dedicated to the mathematical arts. Fri, 29 May 2015 09:17:44 +0000 hourly 1 https://wordpress.org/?v=4.1.41 http://www.arsmathematica.net/2010/10/28/universal-differential-equation/#comment-69083 Sat, 24 Mar 2012 20:39:56 +0000 http://www.arsmathematica.net/?p=1417#comment-69083 It is a well known subject since the first paper about this problem. It seems to me that the first one is Lee A. Rubel’s one.

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