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

<http://www.irandoc.acir/onto/irandoc/mathpro1657>
  ns0:comment <http://en.wikipedia.org/wiki/hamiltonian_vector_field> ;
  ns0:contains <http://www.irandoc.acir/onto/irandoc/mathpro37> ;
  skos:broader <http://www.irandoc.acir/onto/irandoc/mathpro1624> ;
  skos:prefLabel "میدان برداری همیلتونی"@fa, "hamiltonian vector field"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept .

<http://www.irandoc.acir/onto/irandoc/mathpro1624>
  skos:prefLabel "میدان بردارها"@fa, "field of vectors"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:narrower <http://www.irandoc.acir/onto/irandoc/mathpro1657> .

ns0:comment rdfs:label "توضیحات"@fa, "comment"@en .
<http://www.irandoc.acir/onto/irandoc/mathpro37>
  skos:prefLabel "خمینه همتافته"@fa, "منیفولد سیمپلکتیک"@fa, "symplectic manifold"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept .

<http://www.irandoc.acir/onto/irandoc/mathpro1669> skos:broader <http://www.irandoc.acir/onto/irandoc/mathpro1657> .
ns0:contains rdfs:label "شامل"@fa, "contains"@en .