Wed, 04 Jan 2023 17:46:27 +0000 paulson merged
Wed, 04 Jan 2023 10:27:32 +0000 paulson merged
Wed, 04 Jan 2023 10:27:19 +0000 paulson continued proof simplification
Tue, 03 Jan 2023 19:55:35 +0000 paulson merged
Tue, 03 Jan 2023 19:55:24 +0000 paulson Further simplifications
Tue, 03 Jan 2023 17:02:41 +0000 paulson More tidying of proofs
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