@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:-BVKTNWPS-4
  skos:definition """La cardioïde est une courbe algébrique plane, trajectoire d'un point fixé à un cercle qui roule sans glisser sur un second cercle de même diamètre. Il s'agit donc d'une courbe cycloïdale dont la directrice est un cercle (ou épicycloïde). 
<br/>(Wikipedia, L'Encylopédie Libre, <a href="https://fr.wikipedia.org/wiki/Cardio%C3%AFde">https://fr.wikipedia.org/wiki/Cardio%C3%AFde</a>)"""@fr, """In geometry, a cardioid (from Greek καρδιά (kardiá) 'heart') is a plane curve traced by a point on the perimeter of a circle that is rolling around a fixed circle of the same radius. It can also be defined as an epicycloid having a single cusp. It is also a type of sinusoidal spiral, and an inverse curve of the parabola with the focus as the center of inversion. A cardioid can also be defined as the set of points of reflections of a fixed point on a circle through all tangents to the circle. 
<br/>(Wikipedia, The Free Encyclopedia, <a href="https://en.wikipedia.org/wiki/Cardioid">https://en.wikipedia.org/wiki/Cardioid</a>)"""@en ;
  skos:exactMatch <https://en.wikipedia.org/wiki/Cardioid>, <https://fr.wikipedia.org/wiki/Cardio%C3%AFde> ;
  dc:created "2023-08-01"^^xsd:date ;
  skos:prefLabel "cardioïde"@fr, "cardioid"@en ;
  dc:modified "2023-08-01"^^xsd:date ;
  skos:inScheme psr: ;
  skos:broader psr:-QP0D47D3-D, psr:-WFQQ48RG-8 ;
  a skos:Concept .

psr:-QP0D47D3-D
  skos:prefLabel "courbe algébrique"@fr, "algebraic curve"@en ;
  a skos:Concept ;
  skos:narrower psr:-BVKTNWPS-4 .

psr:-WFQQ48RG-8
  skos:prefLabel "plane curve"@en, "courbe plane"@fr ;
  a skos:Concept ;
  skos:narrower psr:-BVKTNWPS-4 .