Stability of rank‐3 Lazarsfeld–Mukai bundles on K3 surfaces
Stability of rank‐3 Lazarsfeld–Mukai bundles on K3 surfaces
复制标题
K3 表面上 3 阶 Lazarsfeld-Mukai 束的稳定性
DOI:
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发表时间:
2011
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通讯作者:
Margherita Lelli–Chiesa
中科院分区:
文献类型:
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作者:
Margherita Lelli–Chiesa
Given an ample line bundle L on a K3 surface S, we study the slope stability with respect to L of rank‐3 Lazarsfeld–Mukai bundles associated with complete, base‐point‐free nets of type gd2 on curves C in the linear system | L|. When d is large enough and C is general, we obtain a dimensional statement for the variety Wd2(C) . If the Brill–Noether number is negative, then we prove that any gd2 on any smooth, irreducible curve in | L| is contained in a ger which is induced from a line bundle on S, thus answering a conjecture of Donagi and Morrison. Applications towards transversality of Brill–Noether loci and higher‐rank Brill–Noether theory are then discussed.