- From: <jos.deroo.jd@belgium.agfa.com>
- Date: Mon, 23 Jul 2001 20:40:30 +0100
- To: bwm@hplb.hpl.hp.com
- Cc: w3c-rdfcore-wg@w3.org
[a correction after some holiday biking]
> > A mapping IEXT : P -> R x R // R cross R
>
> Isn't the notation f: A -> B used for a function with
> domain A and range B?
> But IEXT is not a funtion at all, it is a relation on
> a cross product R x R which is simply a subset of R x R
> IEXT(I(p)) = {<I(s),I(o)> el R x R: I(s) I(p) I(o) is true}
I was wrong, IEXT is indeed a function but it's range
seems to be the set of all subsets of R x R
(including the empty set?)
--
Jos De Roo, AGFA http://www.agfa.com/w3c/jdroo/
Received on Monday, 23 July 2001 14:43:01 UTC