Fri, 28 May 2021 18:11:34 +0100 paulson some new and/or varient results about images
Fri, 28 May 2021 14:43:06 +0100 paulson nicer statement of Liouville_theorem
Fri, 28 May 2021 20:21:25 +0000 haftmann more lemmas
Fri, 28 May 2021 20:21:23 +0000 haftmann max word moved to Word_Lib in AFP
Wed, 26 May 2021 18:07:49 +0200 wenzelm more robust syntax;
Tue, 25 May 2021 23:58:49 +0200 wenzelm unused;
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