{"id":"S2002004437","label":"Picard-Lefschetz theory","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh2002004437","normalized_label":"picard-lefschetz theory","broader":["http://id.loc.gov/authorities/subjects/sh85054140"],"aliases":["Lefschetz theorem, Picard-","Lefschetz theory, Picard-","Picard-Lefschetz theorem"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh2002004437","provider":"lcsh","revision":"c814615bc952edac","taxonomy_revision":"f050b5d4780b1289","title":"Picard-Lefschetz theory","url":"/topics/S2002004437","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"868077634507122246","address_version":"morton4x16-v1","coordinates":[0,477,20647,21504],"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}