A Robinson-Schensted Correspondence for Partial Permutations

A Robinson-Schensted Correspondence for Partial Permutations
复制标题

部分排列的 Robinson-Schensted 对应

DOI:
--
复制
发表时间:
2020
期刊:
arXiv: Algebraic Geometry
影响因子:
--
通讯作者:
R. Singh
R. Singh
中科院分区:
--
文献类型:
--
作者:
R. Singh

文献摘要

被引文献

相似文献

我们研究了与矩阵Schubert簇相关联的Steinberg簇,并建立了Robinson-Schensted型对应,$\tau\leftrightarrow(\Lambda,\mathsf Q,\mathsf P)$.这里$\tau$是一个大小为$p\times q$的部分置换,$\Lambda$是一个大小为$p+q$的可允许的有符号Young图,$\mathsf P$(分别为p $和q $)。$\mathsf Q$)大小为$p$的标准Young表(分别为$q$),其形状由$\Lambda$决定。通过将矩阵Schubert簇嵌入到Schubert簇中,我们发现了经典Robinson-Schensted-Knuth对应的组合数学与我们的双射之间的密切关系。我们还证明了对合$(\Lambda,\mathsf Q,\mathsf P)\mapsto(\Lambda^\vee,\mathsf P,\mathsf Q)$对应于矩阵Schubert簇上的投影对偶。
We study the Steinberg variety associated to matrix Schubert varieties, and develop a Robinson-Schensted type correspondence, $\tau\leftrightarrow(\Lambda,\mathsf Q,\mathsf P)$. Here $\tau$ is a partial permutation of size $p\times q$, $\Lambda$ an admissible signed Young diagram of size $p+q$, and $\mathsf P$ (resp. $\mathsf Q$) a standard Young tableau of size $p$ (resp. $q$) whose shape is determined by $\Lambda$. By embedding the matrix Schubert variety into a Schubert variety, we find a close relationship between the combinatorics of the classical Robinson-Schensted-Knuth correspondence and our bijection. We also show that an involution $(\Lambda,\mathsf Q,\mathsf P)\mapsto(\Lambda^\vee,\mathsf P,\mathsf Q)$ corresponds to projective duality on matrix Schubert varieties.