@prefix psr: <http://data.loterre.fr/ark:/67375/PSR> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .

psr: a skos:ConceptScheme .
psr:-GC8Z7N05-C
  skos:prefLabel "Laguerre transformation"@en, "transformation de Laguerre"@fr ;
  a skos:Concept ;
  skos:broader psr:-XPFQM0ZH-H .

psr:-FBLZVD8C-9
  skos:prefLabel "droite projective"@fr, "projective line"@en ;
  a skos:Concept ;
  skos:broader psr:-XPFQM0ZH-H .

psr:-WCS5DV8S-5
  skos:prefLabel "Klein quadric"@en, "quadrique de Klein"@fr ;
  a skos:Concept ;
  skos:broader psr:-XPFQM0ZH-H .

psr:-WXHQBZZH-F
  skos:prefLabel "courbe duale"@fr, "dual curve"@en ;
  a skos:Concept ;
  skos:broader psr:-XPFQM0ZH-H .

psr:-J86R5RZW-4
  skos:prefLabel "transformation de Möbius"@fr, "Möbius transformation"@en ;
  a skos:Concept ;
  skos:broader psr:-XPFQM0ZH-H .

psr:-HVB8GBDB-3
  skos:prefLabel "fonction homographique"@fr, "homographic function"@en ;
  a skos:Concept ;
  skos:broader psr:-XPFQM0ZH-H .

psr:-TJ9ZMMDF-W
  skos:prefLabel "géométrie"@fr, "geometry"@en ;
  a skos:Concept ;
  skos:narrower psr:-XPFQM0ZH-H .

psr:-QX8QPVSP-7
  skos:prefLabel "Newton line"@en, "droite de Newton"@fr ;
  a skos:Concept ;
  skos:broader psr:-XPFQM0ZH-H .

psr:-XTV6L1B4-L
  skos:prefLabel "groupe spécial linéaire SL(2, R)"@fr, "special linear group SL(2, R)"@en ;
  a skos:Concept ;
  skos:broader psr:-XPFQM0ZH-H .

psr:-LDDK1PPJ-D
  skos:prefLabel "groupe projectif linéaire"@fr, "projective linear group"@en ;
  a skos:Concept ;
  skos:broader psr:-XPFQM0ZH-H .

psr:-ZBC3R084-W
  skos:prefLabel "Cayley-Klein metric"@en, "métrique de Cayley-Klein"@fr ;
  a skos:Concept ;
  skos:broader psr:-XPFQM0ZH-H .

psr:-RJ59S3T4-1
  skos:prefLabel "métrique de Fubini-Study"@fr, "Fubini-Study metric"@en ;
  a skos:Concept ;
  skos:broader psr:-XPFQM0ZH-H .

psr:-FM8KZ7BS-Q
  skos:prefLabel "point à l'infini"@fr, "point at infinity"@en ;
  a skos:Concept ;
  skos:broader psr:-XPFQM0ZH-H .

psr:-F7H66R6P-S
  skos:prefLabel "droite projective sur un anneau"@fr, "projective line over a ring"@en ;
  a skos:Concept ;
  skos:broader psr:-XPFQM0ZH-H .

psr:-NFS3J16J-V
  skos:prefLabel "projective harmonic conjugate"@en, "division harmonique"@fr ;
  a skos:Concept ;
  skos:broader psr:-XPFQM0ZH-H .

psr:-XPFQM0ZH-H
  skos:narrower psr:-FD4W1XFM-3, psr:-BJWP71GV-G, psr:-RJ59S3T4-1, psr:-LR1BQFJ7-F, psr:-GC8Z7N05-C, psr:-HVB8GBDB-3, psr:-QX8QPVSP-7, psr:-LDDK1PPJ-D, psr:-F7H66R6P-S, psr:-FM8KZ7BS-Q, psr:-J86R5RZW-4, psr:-XTV6L1B4-L, psr:-FBLZVD8C-9, psr:-WCS5DV8S-5, psr:-NFS3J16J-V, psr:-WXHQBZZH-F, psr:-ZBC3R084-W ;
  skos:definition """In mathematics, projective geometry is the study of geometric properties that are invariant with respect to projective transformations. This means that, compared to elementary Euclidean geometry, projective geometry has a different setting, projective space, and a selective set of basic geometric concepts. The basic intuitions are that projective space has more points than Euclidean space, for a given dimension, and that geometric transformations are permitted that transform the extra points (called "points at infinity") to Euclidean points, and vice-versa. 
<br/>(Wikipedia, The Free Encyclopedia, <a href="https://en.wikipedia.org/wiki/Projective_geometry">https://en.wikipedia.org/wiki/Projective_geometry</a>)"""@en, """En mathématiques, la géométrie projective est le domaine de la géométrie qui modélise les notions intuitives de perspective et d'horizon. Elle étudie les propriétés inchangées des figures par projection centrale. 
<br/>(Wikipedia, L'Encylopédie Libre, <a href="https://fr.wikipedia.org/wiki/G%C3%A9om%C3%A9trie_projective">https://fr.wikipedia.org/wiki/G%C3%A9om%C3%A9trie_projective</a>)"""@fr ;
  skos:prefLabel "projective geometry"@en, "géométrie projective"@fr ;
  skos:exactMatch <https://en.wikipedia.org/wiki/Projective_geometry>, <https://fr.wikipedia.org/wiki/G%C3%A9om%C3%A9trie_projective> ;
  skos:inScheme psr: ;
  a skos:Concept ;
  skos:broader psr:-TJ9ZMMDF-W .

psr:-BJWP71GV-G
  skos:prefLabel "groupe orthogonal projectif"@fr, "projective orthogonal group"@en ;
  a skos:Concept ;
  skos:broader psr:-XPFQM0ZH-H .

psr:-FD4W1XFM-3
  skos:prefLabel "Riemann sphere"@en, "sphère de Riemann"@fr ;
  a skos:Concept ;
  skos:broader psr:-XPFQM0ZH-H .

psr:-LR1BQFJ7-F
  skos:prefLabel "Schlegel diagram"@en, "diagramme de Schlegel"@fr ;
  a skos:Concept ;
  skos:broader psr:-XPFQM0ZH-H .