Wed, 13 Dec 2023 19:58:26 +0100 more zproofs, imitating existing proofs (which are a bit rough here);
wenzelm [Wed, 13 Dec 2023 19:58:26 +0100] rev 79260
more zproofs, imitating existing proofs (which are a bit rough here);
(0) -30000 -10000 -3000 -1000 -300 -100 -30 -10 -1 +1 +10 +30 +100 +300 +1000 +3000 tip