Mon, 11 Oct 1999 10:48:44 +0200 paulson new thm card_Diff_singleton; tidied
Sat, 09 Oct 1999 23:20:49 +0200 wenzelm more explanations;
Sat, 09 Oct 1999 23:20:02 +0200 wenzelm tuned presentation;
(0) -3000 -1000 -300 -100 -30 -10 -3 +3 +10 +30 +100 +300 +1000 +3000 +10000 +30000 tip