src/HOL/Isar_examples/Summation.thy
Wed, 06 Oct 1999 18:50:51 +0200 wenzelm improved presentation;
Wed, 06 Oct 1999 00:31:40 +0200 wenzelm improved presentation;
Sat, 04 Sep 1999 21:13:01 +0200 wenzelm replaced ?? by ?;
Thu, 02 Sep 1999 15:25:19 +0200 wenzelm renamed NatSum to Summation;
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