@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:t2-20.17>
  a isq:Entry ;
  rdf:type isq:MathConcept ;
  rdf:type smart:TermEntry ;
  dcterms:identifier "2-20.17" ;
  skosxl:prefLabel "spherical harmonic"@en ;
  skosxl:altLabel "\"Y\"_l^m(vartheta,varphi)"@en ;
  skos:definition "spherical harmonic"@en ;
  smart:hasBindingnessType "bindingness-type:normative" ;
  dcterms:isPartOf <isq:part-2-20> ;
  skos:note "stem:[\"Y\"_l^m(vartheta, varphi) = [((2l+1)/(4pi)) ((l-abs m)!)/((l+ abs m)!)\\]^(1//2) P_l^(abs m) (\"cos\" vartheta)\"e\"^(\"i\" m varphi)]\n\n(for stem:[l, abs(m) in bb(sf(N)); abs(m) <= l])\n\nSolution of\n\nstem:[1/(\"sin \"vartheta) del/(del vartheta) (sin vartheta (del y)/(del vartheta)) + 1/(\"sin\"^2 vartheta) (del^2y)/(del varphi^2) + l(l+1)y=0]\n"@en ;
  iso:urn <urn:iso:std:iso:80000:-2:ed-2:en:item:2-20.17> .