@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:t2-15.7>
  a isq:Entry ;
  rdf:type isq:MathConcept ;
  rdf:type smart:TermEntry ;
  dcterms:identifier "2-15.7" ;
  skosxl:prefLabel "signum, of complex number"@en ;
  skosxl:altLabel "\"sgn \"z"@en ;
  skos:definition "signum stem:[z]"@en ;
  smart:hasBindingnessType "bindingness-type:normative" ;
  dcterms:isPartOf <isq:part-2-15> ;
  skos:note "stem:[\"sgn \"z = z // abs(z) = \"exp \"(\"i arg \"z)] (stem:[z != 0])\n\nstem:[\"sgn \"z = 0] for stem:[z = 0]\n\nSee also item <<t2-10.13>>. Sometimes stem:[\"sgn \"0] is left undefined.\n"@en ;
  iso:urn <urn:iso:std:iso:80000:-2:ed-2:en:item:2-15.7> .