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arXiv 0705.1203math.RTmath-phmath.MP
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截断流李代数的最高权理论

Highest-Weight Theory for Truncated Current Lie Algebras

Benjamin J. Wilson

摘要:

设g表示特征为零的域上的李代数,T(g)表示g与截断多项式环的张量积.李代数T(g)称为截断流李代数,或者在g是有限维半单的特殊情况下,称为广义Takiff代数。本文给出了当基础李代数g具有三角分解时T(g)的一个最高权理论.主要结果是对广泛的一类李代数g,包括对称化的Kac-Moody李代数,Heisenberg代数和Virasoro代数,给出了T(g)的韦尔马模的约化准则.这是通过研究沙波瓦洛夫形式来实现的。

英文摘要:

Let g denote a Lie algebra over a field of characteristic zero, and let T(g) denote the tensor product of g with a ring of truncated polynomials. The Lie algebra T(g) is called a truncated current Lie algebra, or in the special case when g is finite-dimensional and semisimple, a generalized Takiff algebra. In this paper a highest-weight theory for T(g) is developed when the underlying Lie algebra g possesses a triangular decomposition. The principal result is the reducibility criterion for the Verma modules of T(g) for a wide class of Lie algebras g, including the symmetrizable Kac-Moody Lie algebras, the Heisenberg algebra, and the Virasoro algebra. This is achieved through a study of the Shapovalov form.

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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