The moduli spaces of sheaves on surfaces, pathologies and brill-noether problems

The moduli spaces of sheaves on surfaces, pathologies and brill-noether problems
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表面滑轮的模空间、病理学和布里奇诺特问题

DOI:
10.1007/978-3-319-94881-2_4
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发表时间:
2018
期刊:
Abel symposia
影响因子:
--
通讯作者:
Huizenga, J.
Huizenga, J.
中科院分区:
--
文献类型:
--
作者:
Cosun, I.;Huizenga, J.

文献摘要

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Brill-Noether定理在曲面层模空间的双有理几何中起着核心作用。本文综述了最近关于有理曲面Brill-Noether问题的工作。为了突出一些困难,更一般的表面,我们表明,模空间的秩2层非常一般的超曲面的degreedin可以有任意多的不可约组件,并趋于无穷大。
Brill-Noether Theorems play a central role in the birational geometry of moduli spaces of sheaves on surfaces. This paper surveys recent work on the Brill-Noether problem for rational surfaces. In order to highlight some of the difficulties for more general surfaces, we show that moduli spaces of rank 2 sheaves on very general hypersurfaces of degreedincan have arbitrarily many irreducible components asdtends to infinity.