THE CLASSIFICATION OF CONVEX ORDERS ON AFFINE ROOT SYSTEMS

THE CLASSIFICATION OF CONVEX ORDERS ON AFFINE ROOT SYSTEMS
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DOI:
10.1081/agb-100107949
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发表时间:
1999-12
影响因子:
0.7
通讯作者:
Kentaro Ito
Kentaro Ito
中科院分区:
数学3区
文献类型:
--
作者:
Kentaro Ito

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我们对任意无扭曲仿射李代数 g 的正根系上具有凸性质的所有全序进行分类。这样的全阶称为凸阶,用于构造量化通用包络代数 Uq (g) 的上三角子代数 Uq + 的 Poincaré-Birkhoff-Witt 型凸基。
We classify all total orders with a convex property on the positive root system of an arbitrary untwisted affine Lie algebra g. Such total orders are called convex orders and are used to construct convex bases of Poincaré-Birkhoff-Witt type of the upper triangular subalgebra Uq + of the quantized universal enveloping algebra Uq (g).