$A$-判别式与环面簇的Euler障碍的几何度公式
代数几何
2008-12-14 v5
摘要
我们给出了由Gelfand-Kapranov-Zelevinsky引入的-判别式簇的维数和度的显式公式。我们的公式也可应用于-判别式簇为高余维的情形,其度由配置的几何描述。此外,还将给出一般(不一定正规)环面簇的Euler障碍的组合公式。
引用
@article{arxiv.0807.3163,
title = {A geometric degree formula for $A$-discriminants and Euler obstructions of toric varieties},
author = {Yutaka Matsui and Kiyoshi Takeuchi},
journal= {arXiv preprint arXiv:0807.3163},
year = {2008}
}
备注
25 pages, Chapter 4 of the previous version was separated and became a part of a new paper submitted to the arxiv, revised