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

<http://www.irandoc.acir/onto/irandoc/MAT0009535>
  skos:prefLabel "رویه"@fa, "surface"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:related <http://www.irandoc.acir/onto/irandoc/MAT0006648> .

<http://www.irandoc.acir/onto/irandoc/MAT0006648>
  skos:related <http://www.irandoc.acir/onto/irandoc/MAT0006817>, <http://www.irandoc.acir/onto/irandoc/MAT0009535> ;
  skos:broader <http://www.irandoc.acir/onto/irandoc/MAT0006655> ;
  skos:prefLabel "Cauchy problem for first order equation"@en, "مسئله کوشی معادله مرتبه اول"@fa ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept .

<http://www.irandoc.acir/onto/irandoc/MAT0006817>
  skos:prefLabel "معادله ضربه‌ای با شرایط ناموضعی"@fa, "impulsive equation with non-local condition"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:related <http://www.irandoc.acir/onto/irandoc/MAT0006648> .

<http://www.irandoc.acir/onto/irandoc/MAT0006655>
  skos:prefLabel "first order partial differential equation"@en, "معادله دیفرانسیل جزئی مرتبه اول"@fa ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:narrower <http://www.irandoc.acir/onto/irandoc/MAT0006648> .