@prefix isq: <https://w3id.org/standards/isq/ontologies/core/> .
@prefix smart: <https://example.org/smart-sdu/> .
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix dcterms: <http://purl.org/dc/terms/> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .

<isq:t2-7.1>
  a isq:Entry ;
  rdf:type isq:MathConcept ;
  rdf:type smart:TermEntry ;
  dcterms:identifier "2-7.1" ;
  skosxl:prefLabel "natural numbers"@en ;
  skosxl:altLabel "bb(N)"@en ;
  skos:definition "the set of natural numbers, +\nthe set of positive integers and zero\n"@en ;
  smart:hasBindingnessType "bindingness-type:normative" ;
  dcterms:isPartOf <isq:part-2-7> ;
  skos:note "stem:[bb(sf(N)) = {0, 1, 2, 3, ...}]\n\nstem:[bb(sf(N))** = {1, 2, 3, ...}]\n\nOther restrictions can be indicated in an obvious way, as shown below.\n\nstem:[bb(sf(N))_(>5) = {n in bb(sf(N)) &#x2223; n > 5}]\n\nThe symbols stem:[rm(&#8739;N)] and stem:[NN] are also used.\n"@en ;
  iso:urn <urn:iso:std:iso:80000:-2:ed-2:en:item:2-7.1> .