arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1407.6344math.AGmath.AC
收藏

一些非非正则生成的Cox环

Some non-finitely generated Cox rings

José Luis González, Kalle Karu

摘要:

我们给出了一个大家庭的加权射影平面,炸毁一个光滑的点,没有生成的Cox环。然后利用Castravet和Tevelev的方法证明了当n ≥ 13时,稳定的n点亏格零曲线的模空间不存在n-生成Cox环.

英文摘要:

We give a large family of weighted projective planes, blown up at a smooth point, that do not have finitely generated Cox rings. We then use the method of Castravet and Tevelev to prove that the moduli space of stable n-pointed genus zero curves does not have a finitely generated Cox ring if n is at least 13.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑