src/FOL/fol.thy
author paulson
Tue, 15 Jan 2002 10:23:58 +0100
changeset 12762 a0c0a1e3a53a
parent 0 a5a9c433f639
permissions -rw-r--r--
split can now be unfolded even with one argument

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