I should clarify myself in the previous post. I was not proposing to drop lists from the syntax, but rather to drop the semantic part altogether. Since we have function symbols, as Hassan noted, let's just treat lists as syntactic sugar. We can have symbols, rif:listPair and rif:nilList, and encode things like Seq(X,Y|W) in the usual way: rif:listPair(X,rif:listPair(Y, rif:listPair(W,nilList)). There is a slight problem with the fact that equality can make Seq(a,b) equal Seq(a,b,c). (Say, by equating these two the same IRI.) But we had the same problem with the semantics of lists. Now I am thinking that it is easier to fix that through the semantics than through syntactic restrictions. But it is not clear whether we should care that distinct lists might become equal. Any thoughts? --michaelReceived on Wednesday, 12 March 2008 13:50:58 GMT
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