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arXiv 1702.07570math.RTmath.RA
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可对称化Cartan矩阵IV的关系箭图:晶体图和半正则函数

Quivers with relations for symmetrizable Cartan matrices IV: Crystal graphs and semicanonical functions

Christof Geiß, Bernard Leclerc, Jan Schröer

摘要:

我们推广了Lusztig的幂零簇,Kashiwara和Saito的尺规作图法的晶体图的对称对称的情况下。在广义预投射代数的卷积代数中构造了半正则函数。猜想这些函数产生对称化Kac-Moody代数的正部分的包络代数的半规范基。

英文摘要:

We generalize Lusztig's nilpotent varieties, and Kashiwara and Saito's geometric construction of crystal graphs from the symmetric to the symmetrizable case. We also construct semicanonical functions in the convolution algebras of generalized preprojective algebras. Conjecturally these functions yield semicanonical bases of the enveloping algebras of the positive part of symmetrizable Kac-Moody algebras.

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