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arXiv 1303.0359math.RTmath.CO
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关于Sp(2 r)的二元不可约表示的权重数的一种初等方法

An Elementary Approach to Weight Multiplicities in Bivariate Irreducible Representations of Sp(2r)

Julia Maddox

摘要:

对于${\rm Sp}(2r)$的二元不可约表示,我们的意思是最高权包含至多两个非零项的不可约表示,使用复辛李代数及其相应李群的主导权重的通常标识为非负整数递减的$r$ -元组。本文有两个目的。第一个目的是提供所述表示的权重倍数的公式,该公式易于计算。第二个目标是使用基本方法来呈现这些权重多重性。通过对权向量的显式描述,利用基本的多元代数和组合论元推导出了这些权重数的计算公式。

英文摘要:

By bivariate irreducible representations of ${\rm Sp}(2r)$, we mean irreducible representations with highest weights containing at most two nonzero entries, using the usual identification of dominant weights for complex symplectic Lie algebras and their corresponding Lie groups as $r$-tuples in decreasing non-negative integers. This paper has two aims. The first aim is to provide a formula for the weight mulitplicities of said representations, which is easily computable. The second aim is to present these weight multiplicities using elementary means. The formula for these weight multiplicities is derived using basic multiliear algebra and combinatorial arguments through explicit descriptions of weight vectors.

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。

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