Thu, 28 Feb 2019 21:59:58 +0100 wenzelm tuned proofs -- eliminated odd case_tac;
Thu, 28 Feb 2019 21:37:24 +0100 wenzelm more scalable on 32-bit Poly/ML;
Thu, 28 Feb 2019 21:16:17 +0100 wenzelm tuned;
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