Tue, 01 Sep 2020 17:51:20 +0200 wenzelm unused (see also 7b318273a4aa);
Tue, 01 Sep 2020 16:57:54 +0200 wenzelm tuned proofs;
Mon, 31 Aug 2020 22:05:05 +0200 wenzelm proper use of SELECT_GOAL to confine distinct_subgoals_tac to original goal range (amending 366d39e95d3c);
Mon, 31 Aug 2020 17:18:47 +0100 paulson a new lemma
Mon, 31 Aug 2020 16:48:31 +0200 wenzelm more informative bibtex errors;
Sun, 30 Aug 2020 21:21:04 +0100 paulson merged
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