{ "id": "2009.08230", "version": "v1", "published": "2020-09-17T12:21:25.000Z", "updated": "2020-09-17T12:21:25.000Z", "title": "Siegel theta series for indefinite quadratic forms", "authors": [ "Christina Roehrig" ], "comment": "22 pages", "categories": [ "math.NT" ], "abstract": "The modular transformation behavior of theta series for indefinite quadratic forms is well understood in the case of elliptic modular forms due to Vign\\'eras, who deduced that solving a differential equation of second order serves as a criterion for modularity. In this paper we will give a generalization of this result for Siegel theta series.", "revisions": [ { "version": "v1", "updated": "2020-09-17T12:21:25.000Z" } ], "analyses": { "subjects": [ "11F46", "11F27", "11F37" ], "keywords": [ "indefinite quadratic forms", "siegel theta series", "modular transformation behavior", "elliptic modular forms", "second order serves" ], "note": { "typesetting": "TeX", "pages": 22, "language": "en", "license": "arXiv", "status": "editable" } } }