Tensor product weight modules for the mirror Heisenberg-Virasoro algebra

Tensor product weight modules for the mirror Heisenberg-Virasoro algebra
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镜像海森堡-维拉索罗代数的张量积权重模块

DOI:
10.1016/j.jpaa.2021.106929
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发表时间:
2021-09
影响因子:
0.8
通讯作者:
Kaiming Zhao
Kaiming Zhao
中科院分区:
数学2区
文献类型:
--
作者:
Dongfang Gao;Kaiming Zhao

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本文研究镜像Heisenberg-Virasoro代数D上具有无穷维权空间的不可约权模。更确切地说,利用“移位技巧”,确定了D上最高权不可约模与中间级数不可约模的张量积为不可约的充要条件.这导致一族新的D上的不可约权模。得到了任意两个张量积同构的充要条件是其对应的最高权模与中间级数模同构。同时讨论了张量积模非不可约时的子模。
In this paper, we study irreducible weight modules with infinite dimensional weight spaces over the mirror Heisenberg-Virasoro algebra D. More precisely, the necessary and sufficient conditions for the tensor products of irreducible highest weight modules and irreducible modules of intermediate series over D to be irreducible are determined by using “shifting technique”. This leads to a family of new irreducible weight modules over D. Then we obtain that any two such tensor products are isomorphic if and only if the corresponding highest weight modules and modules of intermediate series are isomorphic respectively. Also we discuss submodules of the tensor product module when it is not irreducible.
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