src/FOL/fol.thy
author clasohm
Mon, 29 Jan 1996 13:58:15 +0100
changeset 1459 d12da312eff4
parent 0 a5a9c433f639
permissions -rw-r--r--
expanded tabs

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