arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1808.01468math.QAmath.RT
收藏

半无限旗流形的等变$K$ -理论中反优势权的Chevalley公式

Chevalley formula for anti-dominant weights in the equivariant $K$-theory of semi-infinite flag manifolds

Satoshi Naito, Daniel Orr, Daisuke Sagaki

摘要:

我们证明了半无限旗流形的形式幂级数模型的环面等变$K$ -群中的反主导权的Pieri-Chevalley公式和Monk公式,这两个公式都是用半无限Lakshmibai-Seshadri路径(或等价的量子Lakshmibai-Seshadri路径)来描述的.鉴于Kato的最新结果,这些公式给出了仿射Grassmannian环面等变$K$ -群的Pontryagin积和有限维旗流形环面等变(小)量子$K$ -群的量子乘法的结构常数的明确描述.我们的证明这些公式是基于标准单项式理论的半无限Lakshmibai-Seshadri路径,这是建立在我们以前的工作,也使用了一个字符串性质的Demazure类子集的晶体基础上的水平零极值重量模块在量子仿射代数。

英文摘要:

We prove a Pieri-Chevalley formula for anti-dominant weights and also a Monk formula in the torus-equivariant $K$-group of the formal power series model of semi-infinite flag manifolds, both of which are described explicitly in terms of semi-infinite Lakshmibai-Seshadri paths (or, equivalently, quantum Lakshmibai-Seshadri paths). In view of recent results of Kato, these formulas give an explicit description of the structure constants for the Pontryagin product in the torus-equivariant $K$-group of affine Grassmannians and that for the quantum multiplication of the torus-equivariant (small) quantum $K$-group of finite-dimensional flag manifolds. Our proof of these formulas is based on standard monomial theory for semi-infinite Lakshmibai-Seshadri paths, which is established in our previous work, and also uses a string property of Demazure-like subsets of the crystal basis of a level-zero extremal weight module over a quantum affine algebra.

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。

↑