Highest weight modules over pre-exp-polynomial Lie algebras
Highest weight modules over pre-exp-polynomial Lie algebras
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预多项式李代数的最高权重模
DOI:
10.1016/j.jalgebra.2009.09.024
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发表时间:
2009-12
影响因子:
0.9
通讯作者:
xiangqian guo
中科院分区:
文献类型:
--
作者:
P.Batra;Rencai Lu;Kaiming zhao;xiangqian guo
In this paper, we introduce pre-exp-polynomial Lie algebras which include loop algebras, Virasoro-like algebras and some quantum torus Lie algebras. We study “highest weight” representations of these Zn+1-graded Lie algebras. More precisely, we show that non-graded and graded irreducible highest weight modules with the same highest weight simultaneously have all finite-dimensional weight spaces or not, and they have all finite-dimensional weight spaces if and only if the highest weight is an exp-polynomial “highest weight”. We also show that non-graded and graded highest weight Verma modules with the same highest weight are simultaneously irreducible or not, and we determine necessary and sufficient conditions for a Verma module to be irreducible.
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