Tue, 11 Feb 2020 12:55:35 +0000 paulson some lemmas about the lex ordering on lists, etc.
Mon, 10 Feb 2020 23:04:45 +0100 wenzelm proper symbols;
Mon, 10 Feb 2020 22:47:43 +0100 wenzelm NEWS;
(0) -30000 -10000 -3000 -1000 -300 -100 -30 -10 -3 +3 +10 +30 +100 +300 +1000 +3000 tip