{ "id": "1507.08558", "version": "v1", "published": "2015-07-30T15:59:27.000Z", "updated": "2015-07-30T15:59:27.000Z", "title": "The compactified jacobian can be nonreduced", "authors": [ "Jesse Leo Kass" ], "comment": "Final version", "journal": "Bull. London Math. Soc. (2015) 47 (4): 686-692", "doi": "10.1112/blms/bdv036", "categories": [ "math.AG" ], "abstract": "We prove by explicit example that the compactified jacobian can be nonreduced. The example is a rational space curve of arithmetic genus 4. This answers a question posed by Cyril D'Souza in 1979.", "revisions": [ { "version": "v1", "updated": "2015-07-30T15:59:27.000Z" } ], "analyses": { "subjects": [ "14H40", "14C05" ], "keywords": [ "compactified jacobian", "rational space curve", "explicit example", "arithmetic genus" ], "tags": [ "journal article" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2015arXiv150708558K" } } }