Diagram automorphisms and quantum groups
Diagram automorphisms and quantum groups
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图自同构和量子群
DOI:
10.2969/jmsj/81488148
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发表时间:
2018-10
影响因子:
0.7
通讯作者:
Zhou Zhiping
中科院分区:
文献类型:
--
作者:
Shoji Toshiaki;Zhou Zhiping
Let $U^-_q = U^-_q(\mathfrak g)$ be the negative part of the quantum group associated to a finite dimensional simple Lie algebra $\mathfrak g$, and $\sigma : \mathfrak g \to \mathfrak g$ be the automorphism obtained from the diagram automorphism. Let $\mathfrak g^{\sigma}$ be the fixed point subalgebra of $\mathfrak g$, and put $\underline U^-_q = U^-_q(\mathfrak g^{\sigma})$. Let $B$ be the canonical basis of $U_q^-$ and $\underline B$ the canonical basis of $\underline U_q^-$. $\sigma$ induces a natural action on $B$, and we denote by $B^{\sigma}$ the set of $\sigma$-fixed elements in $B$. Lusztig proved that there exists a canonical bijection $B^{\sigma} \simeq \underline B$ by using geometric considerations. In this paper, we construct such a bijection in an elementary way. We also consider such a bijection in the case of certain affine quantum groups, by making use of PBW-bases constructed by Beck and Nakajima.
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影响因子:
2.5
作者:
J. Beck;H. Nakajima
通讯作者:
J. Beck;H. Nakajima
DOI:
10.4310/pamq.2011.v7.n3.a8
发表时间:
2008-07
期刊:
arXiv: Representation Theory
影响因子:
--
作者:
G. Lusztig
通讯作者:
G. Lusztig
影响因子:
1.5
作者:
Ya. S. Soibel'man
通讯作者:
Ya. S. Soibel'man
影响因子:
2.5
作者:
M. Kashiwara
通讯作者:
M. Kashiwara
DOI:
10.1007/978-94-010-2305-4
发表时间:
1974-10
期刊:
--
影响因子:
--
作者:
R. Amayo;I. Stewart
通讯作者:
R. Amayo;I. Stewart