src/FOL/fol.thy
author paulson
Wed, 01 Jul 1998 17:59:25 +0200
changeset 5106 05b7c9a2ddf9
parent 0 a5a9c433f639
permissions -rw-r--r--
HOL-Real

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