K理论中的退化位点类——行列式公式与Pfaffian公式
组合数学
2019-04-22 v5
摘要
我们证明了分别描述Grassmann丛的K理论退化位点类的行列式公式,以及辛Grassmann丛和奇正交丛的Pfaffian公式。前者推广了Damon–Kempf–Laksov的行列式公式,后者推广了Pragacz–Kazarian的Chow环公式。作为应用,我们引入了表示辛Grassmann流形和奇正交Grassmann流形的环面等变K理论Schubert类的阶乘GΘ/GΘ′函数,这些函数推广了Buch–Kresch–Tamvakis和Tamvakis–Wilson的双theta多项式。
引用
@article{arxiv.1504.02827,
title = {Twin bent functions, strongly regular Cayley graphs, and Hurwitz-Radon theory},
author = {Paul Leopardi},
journal= {arXiv preprint arXiv:1504.02827},
year = {2019}
}
备注
13 pages. Addressed one reviewer's questions in the Discussion section, including more references. Resubmitted to JACODES Math, with updated affiliation (I am now an Honorary Fellow of the University of Melbourne)