Tue, 12 Sep 2017 12:14:38 +0200 nipkow added lemma
Mon, 11 Sep 2017 18:36:13 +0200 wenzelm clarified signature: proper result;
Mon, 11 Sep 2017 17:07:38 +0100 paulson new theorem about exposed faces
Fri, 08 Sep 2017 19:37:46 +0200 wenzelm back to post-release mode -- after fork point;
Fri, 08 Sep 2017 19:55:18 +0200 wenzelm tuned;
Fri, 08 Sep 2017 19:35:07 +0200 wenzelm Added tag Isabelle2017-RC2 for changeset e9d8ff531700
Fri, 08 Sep 2017 19:31:43 +0200 wenzelm tuned;
Fri, 08 Sep 2017 19:26:28 +0200 wenzelm updated for release;
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