A Pieri-type formula for the K-theory of a flag manifold

A Pieri-type formula for the K-theory of a flag manifold
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旗形流形K理论的Pieri型公式

DOI:
10.1090/s0002-9947-06-04043-8
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发表时间:
2004
期刊:
影响因子:
--
通讯作者:
F. Sottile
F. Sottile
中科院分区:
--
文献类型:
--
作者:
Cristian Lenart;F. Sottile

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本文给出了旗簇的Grothendieck环上的Pieri型乘法公式。这些推广了任意Schubert类与特殊Schubert类的乘积在Schubert类的基础上的推广。这些特殊的舒伯特类由具有以下形式的循环索引:(k-p+1,k-p+2,...,k+1)或形式(k+p,k+p-1,...,k),并从格拉斯曼投影中拉回。我们的公式是在某些标记链的对称群上的k-Bruhat顺序和组合,因为它们不涉及取消。我们还表明,Pieri公式中的多重性自然是某些二项式系数。
We derive explicit Pieri-type multiplication formulas in the Grothendieck ring of a flag variety. These expand the product of an arbitrary Schubert class and a special Schubert class in the basis of Schubert classes. These special Schubert classes are indexed by a cycle which has either the form (k-p+1, k-p+2,..., k+1) or the form (k+p, k+p-1,..., k), and are pulled back from a Grassmannian projection. Our formulas are in terms of certain labeled chains in the k-Bruhat order on the symmetric group and are combinatorial in that they involve no cancellations. We also show that the multiplicities in the Pieri formula are naturally certain binomial coefficients.
DOI: --
发表时间: 1984
期刊: --
影响因子: --
作者:
M. Wodzicki
通讯作者: M. Wodzicki