j9九游会

Effective Gonality Theorem(有用正交性定理)

2025.06.11

投稿:邵奋芬部分:理学院浏览次数:

活动信息

报告问题 (Title):Effective Gonality Theorem(有用正交性定理)

报告人 (Speaker):牛文博 教授(美国阿肯色大学)

报告时间 (Time):2025年6月10日 (周二)15:40-16:40

报告所在 (Place):校本部GJ303

约请人(Inviter):毛雪峰

主理部分:理学院数学系

报告摘要:在这一讲中,,,我将讨论有用正交性定理。。。。。1986年,,,Green-Lazarsfeld提出了gonality意料,,,以为平滑投影曲线的gonality可以从曲线上一个足够正的线束的权一合集中获得。。。。。他们还提出了这种线束可能保存的最小水平。。。。。2015年,,,Ein- Lazarsfeld证实晰足够漂亮线束的意料,,,但该意料的有用部分仍然普遍开放,,,并由Farkas-Kemeny重新明确表述。。。。。在本文中,,,我们建设了权一合子的有用消逝定理,,,它蕴涵了有用的正交性意料。。。。。这项研究是与Jinhyung Park一起相助取得的。。。。。

Abstract:In this talk, I will discuss effective result for gonality theorem. In 1986, Green-Lazarsfeld raised the gonality conjecture asserting that the gonality of a smooth projective curve can be read off from weight-one syzygies of a sufficiently positive line bundle on the curve. They also proposed possible least degree of such a line bundle. In 2015, Ein--Lazarsfeld proved the conjecture for line bundles of sufficiently large degree, but the effective part of the conjecture remained widely open and was reformulated explicitly by Farkas-Kemeny. In this talk, we establish an effective vanishing theorem for weight-one syzygies, which implies the effective gonality conjecture. This is a joint work with Jinhyung Park.

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Effective Gonality Theorem(有用正