Mathematics > Algebraic Geometry
[Submitted on 16 Jul 2018 (v1), last revised 18 Aug 2020 (this version, v5)]
Title:Hyperbolicity and uniformity of varieties of log general type
View PDFAbstract:Projective varieties with ample cotangent bundle satisfy many notions of hyperbolicity, and one goal of this paper is to discuss generalizations to quasi-projective varieties. A major hurdle is that the naive generalization fails, i.e. the log cotangent bundle is never ample. Instead, we define a notion called almost ample which roughly asks that the log cotangent is as positive as possible. We show that all subvarieties of a quasi-projective variety with almost ample log cotangent bundle are of log general type. In addition, if one assumes globally generated then we obtain that such varieties contain finitely many integral points. In another direction, we show that the Lang-Vojta conjecture implies the number of stably integral points on curves of log general type, and surfaces of log general type with almost ample log cotangent sheaf are uniformly bounded.
Submission history
From: Kenneth Ascher [view email][v1] Mon, 16 Jul 2018 16:13:52 UTC (39 KB)
[v2] Tue, 31 Jul 2018 17:10:24 UTC (40 KB)
[v3] Fri, 28 Jun 2019 16:36:57 UTC (40 KB)
[v4] Tue, 28 Jan 2020 17:30:35 UTC (42 KB)
[v5] Tue, 18 Aug 2020 14:46:32 UTC (42 KB)
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