src/FOL/fol.thy
author paulson
Mon, 16 Nov 1998 10:39:30 +0100
changeset 5867 1c4806b4bf43
parent 0 a5a9c433f639
permissions -rw-r--r--
generalized JN_empty and added reachable_SKIP

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