中文

曲线模空间上可构造层的上同调振幅

代数几何 2013-09-02 v4

摘要

我们给出了复数域上模栈Mg,nM_{g,n}上可构造层上同调的上界。这使我们能够恢复相关映射类群的虚拟上同调维数的Harer界,以及关于MgM_g的完备子簇的Diaz定理。我们还对Mg,nM_{g,n}的Deligne-Mumford紧化中任何开子集(若其为层的并集)获得了这样的上界。我们的证明为在Mg,nM_{g,n}上拟凝聚层的上同调维数获得类似上界提供了一个模板。

关键词

引用

@article{arxiv.1203.4548,
  title  = {Cohomological amplitude for constructible sheaves on moduli spaces of curves},
  author = {Eduard Looijenga},
  journal= {arXiv preprint arXiv:1203.4548},
  year   = {2013}
}

备注

This paper is withdrawn because the proof of the main result is incomplete. This is due to an incorrect use of 1.8 in the proof of 3.1