On Level 0 Affine Lie Modules

On Level 0 Affine Lie Modules
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DOI:
10.4153/cmb-1994-047-9
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发表时间:
1994-09
期刊:
Canadian Mathematical Bulletin
影响因子:
--
通讯作者:
D. Britten;F. Lemire
D. Britten;F. Lemire
中科院分区:
其他
文献类型:
--
作者:
D. Britten;F. Lemire

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证明了中心元作为非零标量的无限维Heisenberg代数的非平凡Z分次模的齐次和的维数是无界的。然后应用这一结果证明了仿射李代数的中心元平凡地作用于权空间为有界维的任何不可分解对角化模。
Abstract It is proven that the dimensions of the homogeneous summands of a nontrivial Z graded module for an infinité dimensional Heisenberg algebra on which a central element acts as nonzero scalar are unbounded. This result is then applied to show that the central elements of an affine Lie algebra act trivially on any indecomposable diagonalizable module whose weight spaces are of bounded dimension.