src/HOL/Isar_Examples/Summation.thy
Tue, 02 Aug 2016 18:44:37 +0200 wenzelm tuned;
Sat, 26 Dec 2015 15:44:14 +0100 wenzelm misc tuning and modernization;
Mon, 02 Nov 2015 13:58:19 +0100 wenzelm tuned document;
less more (0) -3 tip