Wed, 01 Nov 2006 15:49:43 +0100 Numerous cosmetic changes.
paulson [Wed, 01 Nov 2006 15:49:43 +0100] rev 21135
Numerous cosmetic changes. Use of ---> notation for types. Added rules for the introduction of the iff connective, but they are too prolific to be useful.
(0) -10000 -3000 -1000 -300 -100 -30 -10 -1 +1 +10 +30 +100 +300 +1000 +3000 +10000 +30000 tip