• http://ja.wcontology.org/resource/Category:円周率 ( describe )
  • http://www.w3.org/2002/07/owl#sameAs ( describe )
    • http://en.wcontology.org/resource/Category:Pi
    • http://ja.dbpedia.org/resource/Category:円周率
  • http://www.w3.org/1992/02/22-rdf-syntax-ns#type ( describe )
    • http://wcontology.org/core#topicCategory
  • http://wcontology.org/core#narrower ( describe )
    • http://ja.wcontology.org/resource/Category:数学定数
    • http://ja.wcontology.org/resource/Category:三角法
    • http://ja.wcontology.org/resource/Category:超越数
  • http://www.w3.org/ns/prov#wasDerivedFrom ( describe )
    • http://ja.wikipedia.org/wiki/Category:円周率?oldid=55720833
  • http://wcontology.org/core#narrowerTransitive ( describe )
    • http://ja.wcontology.org/resource/Category:円_(数学)