src/FOL/fol.thy
author nipkow
Tue, 25 Apr 2000 08:09:10 +0200
changeset 8771 026f37a86ea7
parent 0 a5a9c433f639
permissions -rw-r--r--
*** empty log message ***

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