{"id":"S2008000119","label":"Pythagorean-hodograph curves","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh2008000119","normalized_label":"pythagorean-hodograph curves","broader":["http://id.loc.gov/authorities/subjects/sh85034914"],"aliases":["PH curves"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh2008000119","provider":"lcsh","revision":"aa750ed57bf3a6c7","taxonomy_revision":"f050b5d4780b1289","title":"Pythagorean-hodograph curves","url":"/topics/S2008000119","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"14433135491300090404","address_version":"morton4x16-v1","coordinates":[0,478,48793,56320],"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}