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

<http://www.irandoc.acir/onto/irandoc/math0006671>
  skos:prefLabel "معادله دوهمساز"@fa, "biharmonic equation"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:narrower <http://www.irandoc.acir/onto/irandoc/math0006670> .

<http://www.irandoc.acir/onto/irandoc/mathpro1080> skos:related <http://www.irandoc.acir/onto/irandoc/math0006670> .
<http://www.irandoc.acir/onto/irandoc/math0006670>
  skos:related <http://www.irandoc.acir/onto/irandoc/math0006667> ;
  skos:broader <http://www.irandoc.acir/onto/irandoc/math0006671> ;
  skos:prefLabel "معادله دوهمساز نوع دوم"@fa, "biharmonic equation of the second kind"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept .

<http://www.irandoc.acir/onto/irandoc/math0006667>
  skos:prefLabel "مسئله دوهمساز نوع دوم"@fa, "biharmonic problem of the second kind"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:related <http://www.irandoc.acir/onto/irandoc/math0006670> .