@prefix skos: <http://www.w3.org/2004/02/skos/core#> .

<http://www.irandoc.acir/onto/irandoc/MAT0006991>
  skos:prefLabel "second order linear differential equation"@en, "معادله دیفرانسیل خطی مرتبه دوم"@fa ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:broader <http://www.irandoc.acir/onto/irandoc/MAT0006992> .

<http://www.irandoc.acir/onto/irandoc/MAT0006993>
  skos:prefLabel "معادله دیفرانسیل معمولی خطی"@fa, "linear ordinary differential equation"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:narrower <http://www.irandoc.acir/onto/irandoc/MAT0006992> .

<http://www.irandoc.acir/onto/irandoc/MAT0006992>
  skos:narrower <http://www.irandoc.acir/onto/irandoc/MAT0006991> ;
  skos:related <http://www.irandoc.acir/onto/irandoc/MAT0006913> ;
  skos:broader <http://www.irandoc.acir/onto/irandoc/MAT0006993> ;
  skos:prefLabel "معادله دیفرانسیل معمولی خطی مرتبه بالاترتر"@fa, "higher order linear differential equation"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept .

<http://www.irandoc.acir/onto/irandoc/MAT0006913>
  skos:prefLabel "higher order ordinary differential equation"@en, "معادله دیفرانسیل معمولی مرتبه بالاتر"@fa ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:related <http://www.irandoc.acir/onto/irandoc/MAT0006992> .