Formal Model: Collections

• 9. There are three elements of Nodes, not contained in PropertyTypes, known as RDF:Seq, RDF:Bag, and RDF:Alt.

• 10. There is a subset of PropertyTypes corresponding to the ordinals called Ord.

  • Refer to elements of Ord as RDF:_1, RDF:_2, ...
  • There must always be one value for RDF:Alt

    • (RDF:_1 is the default)

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