Mon, 07 Oct 2019 11:35:43 +0200 wenzelm discontinued pointless dump_checkpoint and share_common_data -- superseded by base logic image in Isabelle/MMT;
Mon, 07 Oct 2019 10:51:20 +0200 wenzelm count nodes uniformly: avoid overloaded session;
Mon, 07 Oct 2019 10:44:59 +0200 wenzelm clarified signature;
Mon, 07 Oct 2019 14:31:46 +0200 nipkow simplified proof
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