problem with closures in RDF Semantics document (version of 6 June 2003)

The wording for closures is not correct.

For example, rdf-closures are defined in Section 4.1 using

	Apply the rules se1 and se2 and .... to generate all RDF triples
	(i.e.[,] until none of the rules apply or the graph is unchanged.)
	[sic]

However, if an RDF graph contains any triples always possible to apply rule
se1 in a way that changes the graph.

This appears to indicate that the entire notion of the rdf-closure of an
RDF graph is not well defined.


Peter F. Patel-Schneider
Bell Labs Research
Lucent Technologies