Mon, 01 Apr 2013 18:15:00 +0100 fixed counterexample according to def in Chap 8
Christian Urban <christian dot urban at kcl dot ac dot uk> [Mon, 01 Apr 2013 18:15:00 +0100] rev 234
fixed counterexample according to def in Chap 8
(0) -100 -30 -10 -1 +1 +10 +30 tip