On Multiplicities of Maximal Weights of sl̂(n)$\widehat {sl}(n)$-Modules
On Multiplicities of Maximal Weights of sl̂(n)$\widehat {sl}(n)$-Modules
复制标题
关于 sl̂(n)$widehat {sl}(n)$-模块的最大权重重数
DOI:
10.1007/s10468-014-9470-2
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发表时间:
2014
影响因子:
0.6
通讯作者:
K. Misra
中科院分区:
文献类型:
--
作者:
R. Jayne;K. Misra
We determine explicitly the maximal dominant weights for the integrable highest weight-modules V ((k− 1) Λ+ Λ), 0≤ s≤ n− 1, k≥ 2. We give a conjecture for the number of maximal dominant weights of V (k Λ) and prove it in some low rank cases. We give an explicit formula in terms of lattice paths for the multiplicities of a family of maximal dominant weights of V (k Λ). We conjecture that these multiplicities are equal to the number of certain pattern avoiding permutations. We prove that the conjecture holds for k= 2 and give computational evidence for the validity of this conjecture for k > 2.