{ "id": "0710.3568", "version": "v1", "published": "2007-10-18T17:52:23.000Z", "updated": "2007-10-18T17:52:23.000Z", "title": "A criterion for an abelian variety to be simple", "authors": [ "Thomas Bauer" ], "categories": [ "math.AG" ], "abstract": "In this note we give a numerical criterion that expresses the condition that an abelian variety be simple in terms of an invariant that is closely related to the s-invariant of Ein-Cutkosky-Lazarsfeld. The criterion yields new examples where s-invariants are irrational. It may also be viewed as a statement about the geometry of the ample cone.", "revisions": [ { "version": "v1", "updated": "2007-10-18T17:52:23.000Z" } ], "analyses": { "subjects": [ "14K05", "14C20" ], "keywords": [ "abelian variety", "ample cone", "criterion yields", "s-invariant", "ein-cutkosky-lazarsfeld" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2007arXiv0710.3568B" } } }