Generators for the cohomology ring of the moduli of 1-dimensional sheaves on $\mathbb{P}^2$

Generators for the cohomology ring of the moduli of 1-dimensional sheaves on $\mathbb{P}^2$
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DOI:
10.14231/ag-2023-017
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发表时间:
2022-04
期刊:
影响因子:
1.5
通讯作者:
Weite Pi;Junliang Shen
Weite Pi;Junliang Shen
中科院分区:
数学1区
文献类型:
--
作者:
Weite Pi;Junliang Shen

文献摘要

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本文研究了$\mathbb{P}^2$上任意阶稳定1维层的模空间的上同调环的结构。我们得到了一个最小的重言式生成元集,这意味着模空间的上同调和Chow环的最优生成结果。我们的方法是通过重言式关系的几何研究。
We explore the structure of the cohomology ring of the moduli space of stable 1-dimensional sheaves on $\mathbb{P}^2$ of any degree. We obtain a minimal set of tautological generators, which implies an optimal generation result for both the cohomology and the Chow ring of the moduli space. Our approach is through a geometric study of tautological relations.