A Littelmann path model for crystals of Generalized Kac-Moody algebras revisited

A Littelmann path model for crystals of Generalized Kac-Moody algebras revisited
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重新审视广义 Kac-Moody 代数晶体的 Littelmann 路径模型

DOI:
10.1016/j.aim.2009.03.014
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发表时间:
2008
期刊:
arXiv: Representation Theory
影响因子:
--
通讯作者:
Polyxeni Lamprou
Polyxeni Lamprou
中科院分区:
--
文献类型:
--
作者:
A. Joseph;Polyxeni Lamprou

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对于属于不一定对称的Borcherds-Cartan矩阵的晶体,构造了Littelmann路径模型。这里必须克服几个由虚单根引起的组合问题。主要结果是晶体的同构定理和Borcherds-Kac-Weyl型特征公式。在可对称的情况下,同构定理表明由该路径模型构造的晶体与在量子化包络代数中取q→0极限得到的Jeong、Kang、Kashiwara和Shin的晶体一致。
A Littelmann path model is constructed for crystals pertaining to a not necessarily symmetrizable Borcherds–Cartan matrix. Here one must overcome several combinatorial problems coming from the imaginary simple roots. The main results are an isomorphism theorem and a character formula of Borcherds–Kac–Weyl type for the crystals. In the symmetrizable case, the isomorphism theorem implies that the crystals constructed by this path model coincide with those of Jeong, Kang, Kashiwara and Shin obtained by taking q→0 limit in the quantized enveloping algebra.
DOI: --
发表时间: 2010
期刊:
影响因子: --
作者:
Tanisaki;T.
通讯作者: T.
量子广义 Kac-Moody 代数的抽象晶体
DOI: --
发表时间: 2007
期刊: Int. Math. Res. Not. IMRN no.1
影响因子: --
作者:
M. Kashiwara;Vanessa Miemietz;Kashiwara Masaki ; Miemietz Vanessa;Kashiwara M. ; Misra K. C. ; Okado M. ; Yamada D;Jeong kyeonghoon ; Kang Seok-Jin ; Kashiwara Masaki ; Shin Dong-Uy
通讯作者: Jeong kyeonghoon ; Kang Seok-Jin ; Kashiwara Masaki ; Shin Dong-Uy