src/FOL/fol.thy
author wenzelm
Fri, 06 Oct 2000 17:35:58 +0200
changeset 10168 50be659d4222
parent 0 a5a9c433f639
permissions -rw-r--r--
final tuning;

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