Brand new gang of the symbol room one partition

  • The new lexical space away from an icon room is a non-blank number of Unicode character strings.
  • Brand new identifier off a symbol room try a series away from Unicode characters that mode a total IRI [RFC-3987].
  • Various other symbol spaces don’t share an equivalent identifier.

To simplify the language, we will often use symbol space identifiers to refer to the actual symbol spaces (for instance, we may use “symbol space xs:string” instead of “symbol space identified by xs:sequence“).

where exact is called the lexical part of the symbol, and symspace is the identifier of the symbol space. Here literal is a sequence of Unicode characters that must be an element in the lexical space of the symbol space symspace. For instance, "step one.2"^^xs:quantitative and "1"^^xs:quantitative are syntactically valid constants because 1.2 and 1 are members of the lexical space of the XML Schema datatype xs:quantitative. On the other hand, "a+2"^^xs:quantitative is not a syntactically valid symbol, since a+2 is not part of the lexical space of xs:decimal.

Actually

RIF requires that all dialects include the symbol spaces listed and described in Section Constants and Symbol Spaces of [RIF-DTB] as part of their language. These symbol spaces include constants that belong to several important XML Schema datatypes, certain RDF datatypes, and constant symbols specific to RIF. (さらに…)