Restricted Lazarsfeld-Mukai bundles and canonical curves

Restricted Lazarsfeld-Mukai bundles and canonical curves
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受限拉扎斯菲尔德-穆凯丛和正则曲线

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发表时间:
2014
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通讯作者:
A. Ortega
A. Ortega
中科院分区:
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作者:
M. Aprodu;G. Farkas;A. Ortega

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我们证明了两个结果。首先,我们证明了具有极大Clifford指数的任何7属光滑曲线的法向束是稳定的。注意,7是这个结果可能成立的最小的属。然后,我们证明了位于一般K3曲面上的曲线上的第4阶Lazarsfeld-Mukai向量束是稳定的。这两个结果对一般曲线上高阶向量束的Mercat猜想都有影响。
We prove two results. First, we establish that the normal bundle of any smooth curve of genus 7 having maximal Clifford index is stable. Note that 7 is the smallest genus for which such a result could possibly hold. We then show that rank four Lazarsfeld-Mukai vector bundles on a curve that lies on a general K3 surface are stable. Both results have consequences for Mercat's conjecture on higher rank vector bundles on generic curves.