Sun, 17 Sep 2023 18:56:35 +0100 paulson (pointlessly) get rid of some simp calls within "proof"
Sat, 16 Sep 2023 06:38:44 +0000 haftmann reduced prominence of lemma names
Sat, 16 Sep 2023 06:38:44 +0000 haftmann new formulation of an auxiliary lemma
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