Wed, 28 Sep 2022 11:23:49 +0100 paulson fixed some theory presentation issues (?)
Wed, 28 Sep 2022 11:00:13 +0200 wenzelm recover informal "&" from 0c18df79b1c8;
Tue, 27 Sep 2022 22:57:30 +0100 paulson added a couple of structured proofs
Tue, 27 Sep 2022 18:02:34 +0100 paulson More obsolete "unfold" calls
Tue, 27 Sep 2022 17:54:20 +0100 paulson getting rid of apply (unfold ...)
Tue, 27 Sep 2022 17:46:52 +0100 paulson More syntactic cleanup. LaTeX markup working
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