Simply laced root systems arising from quantum affine algebras
Simply laced root systems arising from quantum affine algebras
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由量子仿射代数产生的简单根系
DOI:
10.1112/s0010437x21007739
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发表时间:
2022
影响因子:
1.8
通讯作者:
Park Euiyong
中科院分区:
文献类型:
--
作者:
Kashiwara Masaki;Kim Myungho;Oh Se-jin;Park Euiyong
Letbe a quantum affine algebra with an indeterminate, and letbe the category of finite-dimensional integrable-modules. We writefor the monoidal subcategory ofintroduced by Hernandez and Leclerc. In this paper, we associate a simply laced finite-type root system to each quantum affine algebrain a natural way and show that the block decompositions ofandare parameterized by the lattices associated with the root system. We first define a certain abelian group(respectively) arising from simple modules of(respectively) by using the invariantintroduced in previous work by the authors. The groupsandhave subsetsanddetermined by the fundamental representations inand, respectively. We prove that the pairis an irreducible simply laced root system of finite type and that the pairis isomorphic to the direct sum of infinite copies ofas a root system.
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DOI:
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发表时间:
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期刊:
arXiv: Quantum Algebra
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