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 1111.5924math.AG
收藏

二维椭圆二面角覆盖,椭圆曲面截面几何,线-锥排列的Zebraki对

Elliptic dihedral covers in dimension 2, geometry of sections of elliptic surfaces, and Zariski pairs for line-conic arrangements

Hiro-O Tokunaga

摘要:

本文给出了满足以下条件的Zariski对$(B_1, B_2)$的例子:(i)$°B_1 = °B_2 = 7$。(ii)$B_i$ $(i = 1, 2)$的不可约成分是直线和二次曲线。(iii)$B_i$ $(i = 1, 2)$的奇点是结点、三角结点和普通三重点。为了构造$B_i$($i = 1, 2$),我们利用有理椭圆曲面的截面几何及其群结构。二面角覆盖对于区分$({\mathbb P}^2, B_i)$ $(i = 1, 2)$的拓扑结构起着重要的作用。

英文摘要:

In this article, examples of Zariski pairs $(B_1, B_2)$ satisfying the following condition are given: (i) $°B_1 = °B_2 = 7$. (ii) Irreducible components of $B_i$ $(i = 1, 2)$ are lines and conics. (iii) Singularities of $B_i$ $(i = 1, 2)$ are nodes, tacnodes and ordinary triple points. In order to construct $B_i$ ($i = 1, 2$), we make use of geometry of sections of rational elliptic surfaces and their group structure. Dihedral covers play important roles to distinguish the topology of $({\mathbb P}^2, B_i)$ $(i = 1, 2)$.

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。

↑