arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1401.0179math.AG
收藏

仿射平面上点的Hilbert格式的组合对偶

Combinatorial duality of Hilbert schemes of points in the affine plane

Mathias Lederer

摘要:

仿射平面中$n$点的Hilbert格式包含了参数化仿射平面中$n$不同点的开子格式和参数化支持在仿射平面原点处的余维$n$理想的闭子概形。这两个计划承认Biaenynicki-Birula分解到模空间的理想与规定的词典Gröbner变形。我们表明,这两个分解分层的意义上说,每个阶层的封闭是一个工会的某些其他阶层。我们证明了单项式理想集上相应的两个偏序是对偶的。

英文摘要:

The Hilbert scheme of $n$ points in the affine plane contains the open subscheme parametrizing $n$ distinct points in the affine plane, and the closed subscheme parametrizing ideals of codimension $n$ supported at the origin of the affine plane. Both schemes admit Białynicki-Birula decompositions into moduli spaces of ideals with prescribed lexicographic Gröbner deformations. We show that both decompositions are stratifications in the sense that the closure of each stratum is a union of certain other strata. We show that the corresponding two partial orderings on the set of of monomial ideals are dual to each other.

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。

↑