src/FOL/fol.thy
author wenzelm
Wed, 05 Apr 2000 21:02:19 +0200
changeset 8670 d69616c74211
parent 0 a5a9c433f639
permissions -rw-r--r--
tuned comment;

FOL = IFOL +
rules
classical "(~P ==> P) ==> P"
end