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

<http://www.irandoc.acir/onto/irandoc/math0006981>
  skos:broader <http://www.irandoc.acir/onto/irandoc/math0006989> ;
  skos:prefLabel "معادله بسل مرتبه یک"@fa, "bessel equation of order one"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept .

<http://www.irandoc.acir/onto/irandoc/math0006989>
  skos:prefLabel "معادله دیفرانسیل بسل"@fa, "bessel differential equation"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:narrower <http://www.irandoc.acir/onto/irandoc/math0006981> .