arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0903.5152math.AGmath.CO
收藏

严格正则非退化奇点的Stringy Hodge数

Stringy Hodge numbers of strictly canonical nondegenerate singularities

Jan Schepers

摘要:

我们描述了一类孤立的非退化的超曲面奇点,提供了一个多项式的贡献Batyrev的弦E-函数。这些奇点是通过在牛顿多面体的小平面上施加自然条件而得到的,并且它们是严格正则的。我们证明了Batyrev的猜想关于非负的弦霍奇数是真实的完整品种与这种奇异性,在一些额外的假设下,定义多项式(例如方便或加权齐次)。证明使用组合学上的格多面体。结果形成了一个强有力的推广以前得到的结果Brieskorn奇点。

英文摘要:

We describe a class of isolated nondegenerate hypersurface singularities that give a polynomial contribution to Batyrev's stringy E-function. These singularities are obtained by imposing a natural condition on the facets of the Newton polyhedron, and they are strictly canonical. We prove that Batyrev's conjecture concerning the nonnegativity of stringy Hodge numbers is true for complete varieties with such singularities, under some additional hypotheses on the defining polynomials (e.g. convenient or weighted homogeneous). The proof uses combinatorics on lattice polytopes. The results form a strong generalisation of previously obtained results for Brieskorn singularities.

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。

↑