Tue, 26 Oct 2021 16:22:03 +0100 paulson merged
Tue, 26 Oct 2021 11:15:40 +0100 paulson Added / moved some simple set-theoretic lemmas
Tue, 26 Oct 2021 15:11:40 +0200 wenzelm more CONTRIBUTORS and NEWS;
Tue, 19 Oct 2021 10:41:38 +0200 Norbert Schirmer cleanup; add Apple reference
Thu, 15 Jul 2021 08:09:10 +0200 Norbert Schirmer refine interface
Thu, 12 Nov 2020 17:01:52 +0100 Norbert Schirmer generalized component lookup for syntax and distinctness proofs. added some tracing.
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