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arXiv 2607.04005math.AG
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具有小α不变量的K-多稳定复曲面法诺簇

K-polystable toric Fano varieties with small alpha invariants

Peking University(北京大学);Tongji University(同济大学)

Jihao Liu, Ziwen Zhu

AI总结:

研究中展示了n维K-多稳定复曲面有理法诺簇\(X_n\),由明确格多面体的面扇定义,α不变量恰为\(\frac{2}{2n + 1}\),回答了相关问题。

摘要:

对于每个\(n\geq2\),我们展示了一个\(n\)维K-多稳定复曲面\(\mathbb{Q}\)-法诺簇\(X_n\),它由一个明确的格多面体的面扇定义,并且其α不变量恰好是\(\frac{2}{2n + 1}\)。这回答了刘和庄的一个问题,即是否存在一个\(n\)维K-半稳定\(\mathbb{Q}\)-法诺簇,其α不变量在\(\frac{1}{n + 1}\)和\(\frac{1}{n}\)之间。本文的主要结果是由Chatgpt 5.5 pro和基于Rethlas系统的Danus系统获得的。

英文摘要:

For every $n\geq 2$, we exhibit an $n$-dimensional K-polystable toric $\mathbb{Q}$-Fano variety $X_n$, defined by the face fan of an explicit lattice polytope, and whose alpha invariant is exactly $\tfrac{2}{2n+1}$. This answers a question of Liu and Zhuang whether there exists an $n$-dimensional K-semistable $\mathbb{Q}$-Fano variety whose alpha invariant is between $\tfrac{1}{n+1}$ and $\tfrac1n$. The main result of this paper was obtained by Chatgpt 5.5 pro, and the Danus system based on the Rethlas system.

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。

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