Quasitriangular coideal subalgebras of Uq(g) in terms of generalized Satake diagrams

Quasitriangular coideal subalgebras of Uq(g) in terms of generalized Satake diagrams
复制标题

Uq(g) 广义佐竹图的拟三角共理想子代数

DOI:
10.1112/blms.12360
复制
发表时间:
2018
影响因子:
0.9
通讯作者:
Bart Vlaar
Bart Vlaar
中科院分区:
数学3区
文献类型:
--
作者:
V. Regelskis;Bart Vlaar

文献摘要

参考文献

被引文献

相似文献

设g是有限维半单复李代数,θ是g的对合自同构。根据Letzter,KolB和Balagović,不动点子代数k=gθ有一个量子对应物B,它是Drinfeld-Jimbo量子群Uq(g)的一个共理想子代数,拥有一个泛K-矩阵K。对象θ、k、B和K都可以用佐竹图来描述。在目前的工作中,我们将这种结构扩展到广义佐竹图,组合数据首先考虑赫克。一个广义的Satake图自然地定义了一个限制到标准Cartan子代数h的g的半单自同构θ作为一个对合。它还定义了一个满足k h=hθ的子代数k g,但不一定是一个不动点子代数。子代数k可以量子化为Uq(g)的一个余理想子代数,该余理想子代数具有Kolb和Balagović意义下的泛K-矩阵。我们猜想Uq(g)的所有这样的余理想子代数都是以这种方式从广义Satake图中产生的。
Let g be a finite‐dimensional semisimple complex Lie algebra and θ an involutive automorphism of g . According to Letzter, Kolb and Balagović the fixed‐point subalgebra k=gθ has a quantum counterpart B , a coideal subalgebra of the Drinfeld–Jimbo quantum group Uq(g) possessing a universal K ‐matrix K . The objects θ , k , B and K can all be described in terms of Satake diagrams. In the present work, we extend this construction to generalized Satake diagrams, combinatorial data first considered by Heck. A generalized Satake diagram naturally defines a semisimple automorphism θ of g restricting to the standard Cartan subalgebra h as an involution. It also defines a subalgebra k⊂g satisfying k∩h=hθ , but not necessarily a fixed‐point subalgebra. The subalgebra k can be quantized to a coideal subalgebra of Uq(g) endowed with a universal K ‐matrix in the sense of Kolb and Balagović. We conjecture that all such coideal subalgebras of Uq(g) arise from generalized Satake diagrams in this way.
DOI: 10.1515/crelle-2016-0012
发表时间: 2015-07
期刊: Journal für die reine und angewandte Mathematik (Crelles Journal)
影响因子: --
作者:
M. Balagovic;S. Kolb
通讯作者: M. Balagovic;S. Kolb
DOI: 10.1090/ert/469
发表时间: 2015
期刊: Representation Theory of the American Mathematical Society
影响因子: --
作者:
Balagovic M
通讯作者: Balagovic M