@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:t2-13.5>
  a isq:Entry ;
  rdf:type isq:MathConcept ;
  rdf:type smart:TermEntry ;
  dcterms:identifier "2-13.5" ;
  skosxl:prefLabel "natural logarithm"@en ;
  skosxl:altLabel "\"ln \"x"@en ;
  skos:definition "natural logarithm of stem:[x]"@en ;
  smart:hasBindingnessType "bindingness-type:normative" ;
  dcterms:isPartOf <isq:part-2-13> ;
  skos:note "stem:[\"ln \"x = \"log\"_e x]\n\nstem:[\"log \"x] shall not be used in place of stem:[\"ln \"x], stem:[\"lg \"x], stem:[\"lb \"x], or stem:[\"log\"_e x], stem:[log_(10) x], stem:[log_2 x].\n"@en ;
  iso:urn <urn:iso:std:iso:80000:-2:ed-2:en:item:2-13.5> .