Diagram automorphisms and canonical bases for quantum affine algebras
Diagram automorphisms and canonical bases for quantum affine algebras
复制标题
量子仿射代数的图自同构和规范基
DOI:
10.1016/j.jalgebra.2020.10.037
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发表时间:
2019-10
影响因子:
0.9
通讯作者:
Zhou Zhiping
中科院分区:
文献类型:
--
作者:
Shoji Toshiaki;Zhou Zhiping
Let U q− be the negative part of the quantum enveloping algebra associated to a simply laced Kac-Moody Lie algebra g, and U _ q− the algebra corresponding to the orbit algebra of g obtained from a diagram automorphism σ on g. Let B σ be the set of σ-fixed elements in the canonical basis of U q−, and B _ the canonical basis of U _ q−. Lusztig proved that there exists a canonical bijection B σ≃ B _ based on his geometric construction of canonical bases. In this paper, we prove (the signed bases version of) this fact, in the case where g is finite or affine type, in an elementary way, in the sense that we don't appeal to the geometric theory of canonical bases nor Kashiwara's theory of crystal bases. We also discuss the correspondence for PBW-bases, by using a new type of PBW-bases of U q− obtained by Muthiah-Tingley, which is a generalization of PBW-bases constructed by Beck-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:
2.4
作者:
J. Beck
通讯作者:
J. Beck
DOI:
10.1007/s00029-018-0436-9
发表时间:
2016-09
期刊:
Selecta Mathematica
影响因子:
--
作者:
D. Muthiah;P. Tingley
通讯作者:
D. Muthiah;P. Tingley
影响因子:
0.7
作者:
Kentaro Ito
通讯作者:
Kentaro Ito