Mon, 04 Oct 2021 17:46:18 +0200 wenzelm clarified 'let' syntax: avoid conflict with existing 'let' in FOL;
Mon, 04 Oct 2021 17:22:17 +0200 wenzelm tuned;
Mon, 04 Oct 2021 17:09:12 +0200 wenzelm tuned;
Mon, 04 Oct 2021 16:11:18 +0100 paulson merged
Mon, 04 Oct 2021 16:10:55 +0100 paulson removal of a redundant theorem (and white space)
Mon, 04 Oct 2021 12:32:50 +0100 paulson new material from the Roth development, mostly about finite sets, disjoint famillies and partitions
Mon, 04 Oct 2021 15:01:50 +0200 wenzelm clarified and updated for release;
Mon, 04 Oct 2021 14:07:15 +0200 wenzelm formal comment concerning 83d2208252d1 vs. d8dc8fdc46fc;
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