{"id":"S85046554","label":"Exterior differential systems","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh85046554","normalized_label":"exterior differential systems","broader":["http://id.loc.gov/authorities/subjects/sh85018809","http://id.loc.gov/authorities/subjects/sh85037884"],"aliases":["Differential systems, Exterior"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh85046554","provider":"lcsh","revision":"76d49c556b8921d1","taxonomy_revision":"f050b5d4780b1289","title":"Exterior differential systems","url":"/topics/S85046554","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"900865337028118016","address_version":"morton4x16-v1","coordinates":[0,20,18132,26624],"answer_status":"Directory metadata; local answer requires separate source review","truth_status":"Subject descriptor, not a factual answer or a demonstrated knowledge gap","reviewed_answer":null}