src/FOL/fol.thy
author paulson
Fri, 28 Nov 1997 10:52:32 +0100
changeset 4324 9bfac4684f2f
parent 0 a5a9c433f639
permissions -rw-r--r--
New example

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