{ "id": "1210.3299", "version": "v2", "published": "2012-10-11T17:05:10.000Z", "updated": "2013-01-29T15:39:11.000Z", "title": "The Tate-Voloch Conjecture in a Power of a Modular Curve", "authors": [ "Philipp Habegger" ], "comment": "Corrected some typos in version 2", "categories": [ "math.NT" ], "abstract": "Let $p$ be a prime. Tate and Voloch proved that a point of finite order in the algebraic torus cannot be $p$-adically too close to a fixed subvariety without lying on it. The current work is motivated by the analogy between torsion points on semi-abelian varieties and special or CM points on Shimura varieties. We prove the analog of Tate and Voloch's result in a power of the modular curve Y(1) on replacing torsion points by points corresponding to a product of elliptic curves with complex multiplication and ordinary reduction. Moreover, we show that the assumption on ordinary reduction is necessary.", "revisions": [ { "version": "v2", "updated": "2013-01-29T15:39:11.000Z" } ], "analyses": { "subjects": [ "11G18", "14G35", "11J61" ], "keywords": [ "modular curve", "tate-voloch conjecture", "ordinary reduction", "cm points", "algebraic torus" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2012arXiv1210.3299H" } } }