Tue, 31 Aug 2021 13:54:31 +0200 wenzelm tuned;
Mon, 30 Aug 2021 21:45:05 +0200 wenzelm more Isabelle/Haskell operations;
Mon, 30 Aug 2021 21:41:37 +0200 wenzelm more Isabelle/Haskell operations;
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