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arXiv 2203.01015math.AG
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关于双有理Torelli定理

On birational Torelli theorems

Sumit Roy

摘要:

设$G$是$\mathbb{C}$上的单连通线性代数群.证明了亏格为$\geq 3$的平滑曲线上半稳定主$G$ -丛的模空间的$2$ -双有理Torelli定理,即如果两个这样的模空间是$2$ -双有理的,则曲线是同构的.证明了亏格为$\geq 4$的平滑曲线上稳定辛抛物丛的模空间的$3$ -双有理Torelli定理。

英文摘要:

Let $G$ be a simple simply-connected connected linear algebraic group over $\mathbb{C}$. We proved a $2$-birational Torelli theorem for the moduli space of semistable principal $G$-bundles over a smooth curve of genus $\geq 3$, which says that if two such moduli spaces are $2$-birational then the curves are isomorphic. We also proved a $3$-birational Torelli theorem for the moduli space of stable symplectic parabolic bundles over a smooth curve of genus $\geq 4$.

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