Weight modules over exp-polynomial Lie algebras

Weight modules over exp-polynomial Lie algebras
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DOI:
10.1016/j.jpaa.2003.12.004
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发表时间:
2003-05
影响因子:
0.8
通讯作者:
Y. Billig;K. Zhao
Y. Billig;K. Zhao
中科院分区:
数学2区
文献类型:
--
作者:
Y. Billig;K. Zhao

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在本文中,我们推广了 Berman 和 Billig 关于多项式乘法李代数权重模块的结果。更准确地说,我们证明了在指数多项式李代数上具有指数多项式“最高权重”的最高权重模块具有有限维权重空间。我们还得到了一类在广义 Virasoro 代数上具有有限维权重空间的不可约权重模块,这在经典 Virasoro 代数上不会出现。
In this paper, we generalize a result by Berman and Billig on weight modules over Lie algebras with polynomial multiplication. More precisely, we show that a highest weight module with an exp-polynomial “highest weight” over an exp-polynomial Lie algebra has finite dimensional weight spaces. We also get a class of irreducible weight modules with finite dimensional weight spaces over generalized Virasoro algebras which do not occur over the classical Virasoro algebra.