- From: Sandro Hawke <sandro@w3.org>
- Date: Wed, 07 Mar 2001 07:59:55 -0500
- To: Dan Connolly <connolly@w3.org>
- Cc: www-rdf-logic@w3.org
> > > People are used to anonymous > > > (positional) parts for the addition relation, but I'll name them > > > anyway: > > > > > > :anon1 a arith:BinarySum > > > arith:left 3 > > > arith:right 4 > > > arith:result 7 > > > >arith:left is exactly the same as :of , and > >arith:right is exactly the same as :and. > > > >Perhaps :of and :and were too obscure/clever names. Evidently so. Yes, but what about "arith:result" ? Tim used "num:equals" which might be okay, although I think it's a misleading name. You said you could just use daml:equivalentTo, which I still contend is wrong, since that collapses terms, giving us just 7 a arith:BinarySum arith:left 3 arith:right 4 Do you not see how that's a bad structure? Your first bit about axioms seems to be based on the ambiguity of "unique mapping" meaning either many-to-one or one-to-many. Yes, I agree there is exactly one number which is "the sum of 3 and 4", but you can't split it up (meaningfully) and say there is one number which is a sum, and a sum of 3 and some number, and a sum of some number and 4. You need to keep that "anon1" node to tie the parts together. -- sandro
Received on Wednesday, 7 March 2001 08:00:07 UTC