src/FOL/FOL.thy
author clasohm
Thu, 16 Sep 1993 12:20:38 +0200
changeset 0 a5a9c433f639
child 4093 5e8f3d57dee7
permissions -rw-r--r--
Initial revision

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