Usually systems that provide some form of closed world assumption (or
non-monotonic) negation
have a way to ensure the program (the rules and facts) are stratified (i.e.,
there are no circular
references between antecedents and consequents of rules). This guarantees
unique, consistent
answers for queries involving default negation
Original issue reported on code.google.com by chime...@gmail.com on 24 Sep 2009 at 1:24
Original issue reported on code.google.com by
chime...@gmail.com
on 24 Sep 2009 at 1:24