@prefix isq: <https://w3id.org/standards/isq/ontologies/core/> .
@prefix smart: <https://example.org/smart-sdu/> .
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix dcterms: <http://purl.org/dc/terms/> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .

<isq:t2-17.3>
  a isq:Entry ;
  rdf:type isq:MathConcept ;
  rdf:type smart:TermEntry ;
  dcterms:identifier "2-17.3" ;
  skosxl:prefLabel "spherical coordinate"@en ;
  skosxl:altLabel "r, vartheta, varphi"@en ;
  skos:definition "stem:[bb(ii(r)) = r\" \"bb(ii(e))_r] +\nstem:[\"d\"bb(ii(r)) = \"d\"r bb(ii(e))_r + r \"d\"vartheta bb(ii(e))_vartheta + r\" sin \"vartheta\" d\"varphi\" \"bb(ii(e))_varphi]\n"@en ;
  smart:hasBindingnessType "bindingness-type:normative" ;
  dcterms:isPartOf <isq:part-2-17> ;
  skos:note "stem:[bb(ii(e))_r(vartheta,varphi), bb(ii(e))_vartheta(vartheta, varphi), bb(ii(e))_varphi(varphi)] form an orthonormal right-handed system.\n\nSee <<fig3>>.\n"@en ;
  iso:urn <urn:iso:std:iso:80000:-2:ed-2:en:item:2-17.3> .