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

<http://www.irandoc.acir/onto/irandoc/math0006876>
  skos:prefLabel "معادله دیفرانسیل ریلی"@fa, "rayleigh differential equation"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:related <http://www.irandoc.acir/onto/irandoc/math0006900> .

<http://www.irandoc.acir/onto/irandoc/math0007076>
  skos:prefLabel "نوسانگر وان در پول"@fa, "van der pol oscillator"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:related <http://www.irandoc.acir/onto/irandoc/math0006900> .

<http://www.irandoc.acir/onto/irandoc/math0006908>
  skos:prefLabel "معادلات دیفرانسیل معمولی مرتبه ی دوم"@fa, "second order ordinary differential equation"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:narrower <http://www.irandoc.acir/onto/irandoc/math0006900> .

<http://www.irandoc.acir/onto/irandoc/math0006900>
  skos:altLabel "معادله وان در پول"@fa, "" ;
  skos:related <http://www.irandoc.acir/onto/irandoc/math0006876>, <http://www.irandoc.acir/onto/irandoc/math0007076> ;
  skos:broader <http://www.irandoc.acir/onto/irandoc/math0006908> ;
  skos:prefLabel "معادله دیفرانسیل وان در پول"@fa, "van der pol differential equation"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept .