@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix ns0: <http://rdf-vocabulary.ddialliance.org/xkos#> .

<http://www.irandoc.acir/onto/irandoc/mathpro2656>
  skos:prefLabel "مشکل"@fa, "problem"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:narrower <http://www.irandoc.acir/onto/irandoc/mathpro2593> .

<http://www.irandoc.acir/onto/irandoc/mathpro3265>
  skos:prefLabel "تحلیل"@fa, "analysis"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept .

<http://www.irandoc.acir/onto/irandoc/mathpro1335>
  skos:prefLabel "نظریه معادلات دیفرانسیل"@fa, "theory of differential equations"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept .

<http://rdf-vocabulary.ddialliance.org/xkos#label> rdfs:label "برچسب"@fa, "label"@en .
<http://rdf-vocabulary.ddialliance.org/xkos#is_defined_by> rdfs:label "تعریف شده توسط"@fa, "is defined by"@en .
<http://www.irandoc.acir/onto/irandoc/mathpro2593>
  ns0:is_defined_by <http://www.irandoc.acir/onto/irandoc/mathpro1446>, <http://www.irandoc.acir/onto/irandoc/mathpro1335>, <http://www.irandoc.acir/onto/irandoc/mathpro3265>, <http://www.irandoc.acir/onto/irandoc/mathpro1224> ;
  skos:prefLabel "مسئله هیلبرت"@fa, "hilbert problem"@en ;
  ns0:label <http://www.irandoc.acir/onto/irandoc/mathpro2593> ;
  a skos:Concept, <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept> ;
  skos:broader <http://www.irandoc.acir/onto/irandoc/mathpro2656> .

<http://www.irandoc.acir/onto/irandoc/mathpro1224>
  skos:prefLabel "نظریه احتمال و آمار ریاضی"@fa, "probability theory and mathematical statistics"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept .

<http://www.irandoc.acir/onto/irandoc/mathpro1446>
  skos:prefLabel "نظریه توابع یک متغیر مختلط"@fa, "theory of functions of a complex variable"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept .