src/FOL/fol.thy
author wenzelm
Wed, 20 Feb 2002 00:53:53 +0100
changeset 12902 a23dc0b7566f
parent 0 a5a9c433f639
permissions -rw-r--r--
Symbol.bump_string;

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