{ "id": "1001.0100", "version": "v1", "published": "2010-01-03T04:16:44.000Z", "updated": "2010-01-03T04:16:44.000Z", "title": "The quadratic character of 1+\\sqrt{2} and an elliptic curve", "authors": [ "Yu Tsumura" ], "comment": "4 pages", "categories": [ "math.NT" ], "abstract": "When p is congruent to 1 mod 8, we have a criterion of the quadratic character of 1+\\sqrt{2}, which is related to the class number of \\Q(\\sqrt{-p}). In this paper, we obtain a similar criterion using an elliptic curve, which contrasts to the proof using algebraic number theory for the old one.", "revisions": [ { "version": "v1", "updated": "2010-01-03T04:16:44.000Z" } ], "analyses": { "subjects": [ "11G20", "11E25" ], "keywords": [ "elliptic curve", "quadratic character", "algebraic number theory", "class number", "similar criterion" ], "note": { "typesetting": "TeX", "pages": 4, "language": "en", "license": "arXiv", "status": "editable" } } }