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arXiv 2201.11266math.AG
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差分模块和更高级别的休眠运算符

Differential modules and dormant opers of higher level

Yasuhiro Wakabayashi

摘要:

本文的前半部分研究了具有正特征的微分模的高级推广。这些对象可以看作是曲线上向量丛的环论对应物,曲线上的向量丛具有由P. Berthelot(和C. Montagnon)。在较弱的条件下,将微分模的循环向量的存在性定理推广到更高的层次。在后半部分中,我们在一个点光滑曲线上引入了水平$N > 0$的(休眠)算子,其结构群是$\mathrm{GL}_n$或$\mathrm{PGL}_n$。利用高阶微分模的一些结果证明了$N$级的休眠$\mathrm{PGL}_n$ -算子与$N$级的休眠$\mathrm{PGL}_{p^N-n}$ -算子之间的对偶定理.最后,在基本曲线是$3$点投影线的情况下,我们建立了水平$N$的休眠$\mathrm{PGL}_2$ -算子与某些驯服分歧覆盖之间的双射对应。

英文摘要:

In the first half of the present paper, we study higher-level generalizations of differential modules in positive characteristic. These objects may be regarded as ring-theoretic counterparts of vector bundles on a curve equipped with an action of the ring of (logarithmic) differential operators of finite level introduced by P. Berthelot (and C. Montagnon). The existence assertion for a cyclic vector of a differential module is generalized to higher level under mild conditions. In the second half, we introduce (dormant) opers of level $N > 0$ on a pointed smooth curve whose structure group is either $\mathrm{GL}_n$ or $\mathrm{PGL}_n$. Some of the results on higher-level differential modules are applied to prove a duality theorem between dormant $\mathrm{PGL}_n$-opers of level $N$ and dormant $\mathrm{PGL}_{p^N-n}$-opers of level $N$. Finally, in the case where the underlying curve is a $3$-pointed projective line, we establish a bijective correspondence between dormant $\mathrm{PGL}_2$-opers of level $N$ and certain tamely ramified coverings.

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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