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

<http://www.irandoc.acir/onto/irandoc/math0005521>
  skos:prefLabel "معادله وردشی"@fa, "variational equation"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:narrower <http://www.irandoc.acir/onto/irandoc/math0005520> .

<http://www.irandoc.acir/onto/irandoc/math0002386>
  skos:prefLabel "نظریه بهینه‌سازی"@fa, "optimization theory"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:related <http://www.irandoc.acir/onto/irandoc/math0005520> .

<http://www.irandoc.acir/onto/irandoc/math0005520>
  skos:related <http://www.irandoc.acir/onto/irandoc/math0002386> ;
  skos:broader <http://www.irandoc.acir/onto/irandoc/math0005521> ;
  skos:prefLabel "شمول دیفرانسیلی"@fa, "differential inclusion"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept .