Homological realization of restricted Kostka polynomials

Homological realization of restricted Kostka polynomials
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受限 Kostka 多项式的同调实现

DOI:
10.1155/imrn.2005.1997
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发表时间:
2005
影响因子:
1
通讯作者:
E. Feigin
E. Feigin
中科院分区:
数学1区
文献类型:
--
作者:
B. Feigin;E. Feigin

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本文给出了$\sl_2$的限制Kostka多项式的两种实现。首先证明了在某个模中具有a系数的当前代数的零同调的限制Kostka多项式。作为推论,我们重新得到了交错和公式。其次,我们证明了限制Kostka多项式是某些可积$\hat{\sl}_2$-模分解为不可约分支的a $q$-重数。这允许写一种费米子公式的Virasoro幺正模型。
In this paper we give two realizations of the restricted Kostka polynomials for $\sl_2$. Firstly we identify the restricted Kostka polynomials with a characters of the zero homology of the current algebra with a coefficients in a certain modules. As a corollary we reobtain the alternating sum formula. Secondly we show that the restricted Kostka polynomials are a $q$-multiplicities of the decomposition of the certain integrable $\hat{\sl}_2$-modules to the irreducible components. This allows to write a kind of fermionic formula for the Virasoro unitary models.
DOI: 10.1073/pnas.85.14.4956
发表时间: 1988-07
影响因子: 11.1
作者:
V. Kac;M. Wakimoto
通讯作者: V. Kac;M. Wakimoto