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

mdl: a skos:ConceptScheme .
mdl:-CZJMQL0G-F
  skos:prefLabel "Poincaré group"@en, "groupe de Poincaré"@fr ;
  a skos:Concept ;
  skos:related mdl:-K2T4RHC8-8 .

mdl:-K2T4RHC8-8
  skos:hiddenLabel "Conformal symmetry"@en, "Symétrie conforme"@fr, "symétries conformes"@fr, "conformal siesmmetries"@en, "Symétrie conformes"@fr ;
  skos:related mdl:-CZJMQL0G-F ;
  skos:definition "In mathematical physics, the conformal symmetry of spacetime is expressed by an extension of the Poincaré group. The extension includes special conformal transformations and dilations. In three spatial plus one time dimensions, conformal symmetry has 15 degrees of freedom: ten for the Poincaré group, four for special conformal transformations, and one for a dilation. Harry Bateman and Ebenezer Cunningham were the first to study the conformal symmetry of Maxwell's equations. They called a generic expression of conformal symmetry a spherical wave transformation. General relativity in two spacetime dimensions also enjoys conformal symmetry. (Wikipedia, The Free Encyclopedia, <a href=\"https://en.wikipedia.org/wiki/Conformal_symmetry\" target=\"_blank\">https://en.wikipedia.org/wiki/Conformal_symmetry</a>)"@en, "En physique théorique, la symétrie conforme désigne la symétrie sous changement d'échelle, on dit aussi sous dilatation, ainsi que sous les transformations conformes spéciales. Sa combinaison avec le groupe de Poincaré donne le groupe de symétrie conforme ou plus simplement, groupe conforme. (Wikipedia, L'Encylopédie Libre, <a href=\"https://fr.wikipedia.org/wiki/Sym%C3%A9trie_conforme\" target=\"_blank\">https://fr.wikipedia.org/wiki/Sym%C3%A9trie_conforme</a>)"@fr ;
  skos:exactMatch <https://fr.wikipedia.org/wiki/Sym%C3%A9trie_conforme>, <https://en.wikipedia.org/wiki/Conformal_symmetry> ;
  a skos:Concept ;
  skos:broader mdl:-KN4D6SGL-R ;
  skos:prefLabel "symétrie conforme"@fr, "conformal symmetry"@en ;
  skos:altLabel "Superconformal symmetry"@en ;
  skos:inScheme mdl: .

mdl:-KN4D6SGL-R
  skos:prefLabel "mathematical physics"@en, "physique mathématique"@fr ;
  a skos:Concept ;
  skos:narrower mdl:-K2T4RHC8-8 .