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

<http://www.irandoc.acir/onto/irandoc/math0006670>
  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 ;
  skos:broader <http://www.irandoc.acir/onto/irandoc/math0006671> .

<http://www.irandoc.acir/onto/irandoc/math0006664>
  skos:prefLabel "تابع دوهمساز"@fa, "biharmonic function"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:broader <http://www.irandoc.acir/onto/irandoc/math0006671> .

<http://www.irandoc.acir/onto/irandoc/math0006669>
  skos:prefLabel "معادله دوهمساز نوع اول"@fa, "biharmonic equation of the first kind"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:broader <http://www.irandoc.acir/onto/irandoc/math0006671> .

<http://www.irandoc.acir/onto/irandoc/math0006695>
  skos:prefLabel "معادله دیفرانسیل جزئی مرتبه بالاتر"@fa, "higher-order partial differential equation"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:narrower <http://www.irandoc.acir/onto/irandoc/math0006671> .

<http://www.irandoc.acir/onto/irandoc/math0006671>
  skos:narrower <http://www.irandoc.acir/onto/irandoc/math0006665>, <http://www.irandoc.acir/onto/irandoc/math0006668>, <http://www.irandoc.acir/onto/irandoc/math0006669>, <http://www.irandoc.acir/onto/irandoc/math0006670>, <http://www.irandoc.acir/onto/irandoc/math0006664> ;
  a skos:Concept, <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept> ;
  skos:prefLabel "biharmonic equation"@en, "معادله دوهمساز"@fa ;
  skos:altLabel "", "معادله دیفرانسیل همسازدوگانه"@fa ;
  skos:broader <http://www.irandoc.acir/onto/irandoc/math0006695> ;
  skos:related <http://www.irandoc.acir/onto/irandoc/math0006680> .

<http://www.irandoc.acir/onto/irandoc/math0006665>
  skos:prefLabel "عملگر دوهمساز"@fa, "biharmonic operator"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:broader <http://www.irandoc.acir/onto/irandoc/math0006671> .

<http://www.irandoc.acir/onto/irandoc/math0006680>
  skos:prefLabel "معادله کان-هیلیارد"@fa, "cahn-hilliard equation"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:related <http://www.irandoc.acir/onto/irandoc/math0006671> .

<http://www.irandoc.acir/onto/irandoc/math0006668>
  skos:prefLabel "مسئله دوهمساز"@fa, "biharmonic problem"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:broader <http://www.irandoc.acir/onto/irandoc/math0006671> .