W3C

– DRAFT –
RDF-star Semantics TF

14 March 2025

Attendees

Present
AndyS, doerthe, enrico, niklasl, pfps, TallTed
Regrets
-
Chair
-
Scribe
not-me

Meeting minutes

discussion on open issues and PRs of RDF Semantics

<niklasl> IPR(I) = { RE(x, y, z) | x ∈ IR, y ∈ IP, z ∈ IR } and F(I) = { RE(x, y, z)|<x, z> ∈ IEXT(y) }

<niklasl> Aren't irrational numbers in the set of literal values?

<niklasl> Is the fact that a specific proposition is of rdf:type rdfs:Proposition in the set of facts?

<niklasl> https://github.com/w3c/rdf-semantics/pull/91/files

<gb> Pull Request 91 A formal background to unify triples and triple terms (by franconi) [spec:substantive]

<niklasl> w3c/rdf-semantics#85

<gb> CLOSED Issue 85 remove informative section about reification, collections, and containers from Semantics (by pfps) [spec:editorial]

<enrico> FEXT(G, I, A) = { RE( [I+A](s), I(p), [I+A](o) )|s p o. is in G };

<TallTed> doerthe — in https://github.com/w3c/rdf-semantics/pull/91/files/50cdc1d50e1aad43d7ba168a3036188049aa5402..a3e8167baa5f9340f114bb9bcb875bfd89d07713 , I think there's some broken language.

<TallTed> Possibly more easily visible by searching for "Given a blank node mapping A" in the preview, https://pr-preview.s3.amazonaws.com/franconi/rdf-semantics-fork-enrico/pull/91.html

<niklasl> @enrico see https://github.com/w3c/rdf-semantics/pull/91/files#r1995851932

<enrico> Conclusions: (1) we had a long discussion on PR#91, for which we have now a better formulation - doerthe will give her final approval, and (2) we had a long discussion on the well-foundedness of the current definition of RE (total injective mapping) - doerthe will try to find if there is any actual problem.

<gb> Issue 91 not found

<TallTed> G

<TallTed> Given a blank node mapping A, the set of all facts asserted by a graph G in an interpretation I is FEXT(G, I, A) = { < [I+A](s), I(p), [I+A](o) >£¸s p o. is in G }. We then observe that given a blank node mapping, the asserted facts of a graph with respect to an interpretation may not necessarily be among the facts of the interpretation.

Minutes manually created (not a transcript), formatted by scribe.perl version 244 (Thu Feb 27 01:23:09 2025 UTC).

Diagnostics

Succeeded: s/leaving. As of this point the attendees have been gkellogg, james, TallTed, Tpt, olaf, pchampin, gtw, niklasl, ora, eBremer, AZ, enrico, pfps, Souri, present, doerthe//

Succeeded: s/On IRC I see gkellogg, TallTed, csarven_, Zakim, RRSAgent, driib5, pchampin, rhiaro, m2gbot, gb, gtw, ktk, agendabot, Tpt//

Succeeded: s/Present: gkellogg, james, TallTed, Tpt, olaf, pchampin, gtw, niklasl, ora, eBremer, AZ, enrico, pfps, Souri, present, doerthe//

Active on IRC: AndyS, doerthe, enrico, niklasl, pfps, TallTed