src/FOL/fol.thy
author wenzelm
Mon, 20 Oct 1997 12:50:18 +0200
changeset 3954 c8c188655948
parent 0 a5a9c433f639
permissions -rw-r--r--
reset global_names;

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