src/FOL/FOL.thy
author lcp
Fri, 21 Oct 1994 09:47:02 +0100
changeset 649 237fce674bfb
parent 0 a5a9c433f639
child 4093 5e8f3d57dee7
permissions -rw-r--r--
LCF/LCF.thy: the constant VOID had mixfix syntax "()" !! Added quotes.

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