arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1304.4495math.AG
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关于线性系和D. C.管家

On linear systems and a conjecture of D. C. Butler

U. N. Bhosle, L. Brambila-Paz, P. E. Newstead

摘要:

设$C$是亏格为$g$的光滑不可约射影曲线,$L$是由维数为$n+1$的$H^0(L)$的线性子空间$V$生成的次数为$d$的线丛.证明了D. C. Butler关于赋值映射$V\otimes{\mathcal O}_C\to L$的核的半稳定性的结果,并得到了关于该核的稳定性的新结果.这个问题的自然背景是曲线上的相干系统的理论,我们的技术涉及在这个理论中的墙交叉公式。

英文摘要:

Let $C$ be a smooth irreducible projective curve of genus $g$ and $L$ a line bundle of degree $d$ generated by a linear subspace $V$ of $H^0(L)$ of dimension $n+1$. We prove a conjecture of D. C. Butler on the semistability of the kernel of the evaluation map $V\otimes{\mathcal O}_C\to L$ and obtain new results on the stability of this kernel. The natural context for this problem is the theory of coherent systems on curves and our techniques involve wall crossing formulae in this theory.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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