Sat, 23 Nov 2013 16:39:48 +0000 paulson Simplified, tidied and generalised proofs esp of Binomial Theorem.
Sat, 23 Nov 2013 17:15:44 +0100 wenzelm more uniform / rigid checking of Goal.prove_common vs. Proof.conclude_goal -- NB: Goal.prove_common cannot check hyps right now, e.g. due to undeclared Simplifier prems;
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