src/FOL/fol.thy
author berghofe
Mon, 05 Aug 2002 14:35:33 +0200
changeset 13455 f88a91ff8ac6
parent 0 a5a9c433f639
permissions -rw-r--r--
Removed theory NatDef.

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