vexillary 退化轨迹的 K-理论 Chern 类公式
代数几何
2019-06-05 v3
摘要
利用上升算符与几何论证,我们建立了经典类型中退化轨迹的 K-理论类公式。对于 Giambelli 所考虑的经典情形,即一般矩阵秩下降的轨迹,以及一般对称或斜对称矩阵秩下降的轨迹,我们还给出了新的行列式与 Pfaffian 表达式。在附录中,我们为具有二次型的偶秩向量丛构造了 K-理论 Euler 类,细化了 Edidin 与 Graham 引入的 Chow 理论类。我们还建立了极大迷向子丛的顶 Chern 类之间的关系,该关系用于证明类型 D 退化轨迹公式。
引用
@article{arxiv.1701.00126,
title = {K-theoretic Chern class formulas for vexillary degeneracy loci},
author = {David Anderson},
journal= {arXiv preprint arXiv:1701.00126},
year = {2019}
}
备注
48 pages; v2 is a substantial revision, including formulas for all classical types, as well as an expanded appendix on K-theory and a new appendix introducing an Euler class for even orthogonal bundles; v3 corrects the entries of the Pfaffians in Theorems 2, 3, and 4, and includes other minor improvements