@prefix psr: <http://data.loterre.fr/ark:/67375/PSR> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
@prefix dc: <http://purl.org/dc/terms/> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .

psr: a skos:ConceptScheme .
psr:-QLGNKBD8-R
  skos:prefLabel "ensemble"@fr, "set"@en ;
  a skos:Concept ;
  skos:narrower psr:-RV5D20JJ-X .

psr:-RV5D20JJ-X
  skos:inScheme psr: ;
  dc:modified "2024-10-18"^^xsd:date ;
  skos:exactMatch <https://fr.wikipedia.org/wiki/Ensemble_vide>, <https://en.wikipedia.org/wiki/Empty_set> ;
  a skos:Concept ;
  skos:prefLabel "empty set"@en, "ensemble vide"@fr ;
  skos:broader psr:-QLGNKBD8-R ;
  skos:definition """En mathématiques, l'ensemble vide est l'ensemble ne contenant aucun élément. 
<br/>(Wikipedia, L'Encylopédie Libre, <a href="https://fr.wikipedia.org/wiki/Ensemble_vide">https://fr.wikipedia.org/wiki/Ensemble_vide</a>)"""@fr, """In mathematics, the empty set is the unique set having no elements; its size or cardinality (count of elements in a set) is zero. Some axiomatic set theories ensure that the empty set exists by including an axiom of empty set, while in other theories, its existence can be deduced. Many possible properties of sets are vacuously true for the empty set. 
<br/>(Wikipedia, The Free Encyclopedia, <a href="https://en.wikipedia.org/wiki/Empty_set">https://en.wikipedia.org/wiki/Empty_set</a>)"""@en .