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

<http://www.irandoc.acir/onto/irandoc/insp000219>
  skos:prefLabel "Wave propagation"@en, "انتشار موج"@fa ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:related <http://www.irandoc.acir/onto/irandoc/insp0007501> .

<http://www.irandoc.acir/onto/irandoc/insp0007505>
  skos:prefLabel "Wave equation"@en, "معادله موج"@fa ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:narrower <http://www.irandoc.acir/onto/irandoc/insp0007501> .

<http://www.irandoc.acir/onto/irandoc/insp0007508>
  skos:prefLabel "Eigenvalues and eigenfunctions"@en, "مقدار ویژه و تابع ویژه"@fa ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:related <http://www.irandoc.acir/onto/irandoc/insp0007501> .

<http://www.irandoc.acir/onto/irandoc/insp0007501>
  skos:related <http://www.irandoc.acir/onto/irandoc/insp0007508>, <http://www.irandoc.acir/onto/irandoc/insp0014515>, <http://www.irandoc.acir/onto/irandoc/insp000219> ;
  skos:broader <http://www.irandoc.acir/onto/irandoc/insp0007505> ;
  skos:prefLabel "Helmholtz equation"@en, "معادله هلمهولتز"@fa ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept .

<http://www.irandoc.acir/onto/irandoc/insp0014515>
  skos:prefLabel "Boundary-value problem"@en, "مسئله مقدار مرزی"@fa ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:related <http://www.irandoc.acir/onto/irandoc/insp0007501> .