Mon, 10 Jul 2023 01:33:45 +0100 Chengsong addresses Gerog "N_r meaning and relation with backtracking?" comment
Mon, 10 Jul 2023 00:44:45 +0100 Chengsong Addressed Gerog "can't understand 'erase messes with structure'" comment
Sun, 09 Jul 2023 02:08:12 +0100 Chengsong finished 4.3.2 section explaining why lemma 11 is too strong
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