School Colloquium——Drinfeld-Sokolov Hierarchies and Diagram Automorphisms of Affine Kac-Moody Algebras
报告人：Prof. Siqi Liu（Department of Mathematical Sciences, Tsinghua University）
时间：2018-11-30 15:00-16:00
地点：Room 1114, Sciences Building No. 1
Abstract: For a diagram automorphism of an affine Kac-Moody algebra such that the folded diagram
is still an affine Dynkin diagram, we show that the associated Drinfeld-Sokolov hierarchy also admits
an induced automorphism. Then we show how to obtain the Drinfeld-Sokolov hierarchy associated to
the affine Kac-Moody algebra that corresponds to the folded Dynkin diagram from the invariant
sub-hierarchy of the original Drinfeld-Sokolov hierarchy. This is joint work with Chao-Zhong Wu,
Youjin Zhang, and Xu Zhou.
