src/FOL/fol.thy
author wenzelm
Mon, 16 Nov 1998 11:33:42 +0100
changeset 5896 4a75d89e2818
parent 0 a5a9c433f639
permissions -rw-r--r--
thm, thms;

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