@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:t2-18.13>
  a isq:Entry ;
  rdf:type isq:MathConcept ;
  rdf:type smart:TermEntry ;
  dcterms:identifier "2-18.13" ;
  skosxl:prefLabel "nabla operator"@en ;
  skosxl:altLabel "bb(grad)"@en ;
  skosxl:altLabel "vec grad"@en ;
  skos:definition "nabla operator"@en ;
  smart:hasBindingnessType "bindingness-type:normative" ;
  dcterms:isPartOf <isq:part-2-18> ;
  skos:note "stem:[bb(grad) = e_x del/(del x) + e_y del/(del y) + e_z del/(del z) = sum_i e_i del/(del x_i)]\n\nThe operator is also called \"del operator\".\n"@en ;
  iso:urn <urn:iso:std:iso:80000:-2:ed-2:en:item:2-18.13> .