Moduli spaces of Riemann surfaces as Hurwitz spaces

Moduli spaces of Riemann surfaces as Hurwitz spaces
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黎曼曲面的模空间为 Hurwitz 空间

DOI:
10.1016/j.aim.2023.109217
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发表时间:
2021
影响因子:
1.7
通讯作者:
Andrea Bianchi
Andrea Bianchi
中科院分区:
数学1区
文献类型:
--
作者:
Andrea Bianchi

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考虑g≥0的黎曼曲面的模空间mg, n, n≥1个有序有向标记点。当d≥2 g+ n−1时,我们证明M g, n是同伦等价于与部分相乘量子态S d geo相关的简化Hurwitz空间h r Δ (S d geo)的一个分量。作为应用,我们给出了关于黎曼曲面模空间稳定有理上同调的Mumford猜想的一个新的证明。我们还提供了无限循环空间Ω∞−2 MTSO(2)的组合模型。
We consider the moduli space M g, n of Riemann surfaces of genus g≥ 0 with n≥ 1 ordered and directed marked points. For d≥ 2 g+ n− 1 we show that M g, n is homotopy equivalent to a component of the simplicial Hurwitz space Hur Δ (S d geo) associated with the partially multiplicative quandle S d geo. As an application, we give a new proof of the Mumford conjecture on the stable rational cohomology of moduli spaces of Riemann surfaces. We also provide a combinatorial model for the infinite loop space Ω∞− 2 MTSO (2) of Hurwitz flavour.
局部“好”空间的距离性和元 Lindelof 属性
DOI: --
发表时间: 2008
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影响因子: --
作者:
Shigeo Akashi;Satoshi Kodama;Jorg Brendle and Sakae Fuchino;S. Akashi;Sakae Fuchino;S.Akashi;渕野昌;渕野昌;Sakae Fuchino
通讯作者: Sakae Fuchino