src/FOL/fol.thy
changeset 0 a5a9c433f639
     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/src/FOL/fol.thy	Thu Sep 16 12:20:38 1993 +0200
     1.3 @@ -0,0 +1,4 @@
     1.4 +FOL = IFOL +
     1.5 +rules
     1.6 +classical "(~P ==> P) ==> P"
     1.7 +end