arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1012.4226math.AG
收藏

一般类型曲面的合势

Syzygies of surfaces of general type

P. Banagere, Krishna Hanumanthu

摘要:

本文证明了嵌入伴随线丛$L_r = K + rB$的一般型$X$曲面的射影正规性、正规表示和高等合的新结果,其中$B$是一个基点自由的、充分的线丛.我们的主要结果确定了$r$,其中$L_r$具有$N_p$属性。在推论中,我们将把$r$上的界与$B$的正则性联系起来。最后一节中的例子表明,几个结果是最优的。

英文摘要:

We prove new results on projective normality, normal presentation and higher syzygies for a surface of general type $X$ embedded by adjoint line bundles $L_r = K + rB$, where $B$ is a base point free, ample line bundle. Our main results determine the $r$ for which $L_r$ has $N_p$ property. In corollaries, we will relate the bounds on $r$ to the regularity of $B$. Examples in the last section show that several results are optimal.

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。

↑