src/FOL/fol.thy
author paulson
Mon, 02 Dec 1996 10:25:53 +0100
changeset 2288 16e7a5adb679
parent 0 a5a9c433f639
permissions -rw-r--r--
Made comments more explicit

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