Speaker : Weiqiang Wang (University of Virginia)
Title : A Drinfeld presentation of twisted Yangians
Time : 2023-05-26 (Fri) 11:00 - 12:00
Place : Seminar Room 722, Institute of Mathematics (NTU Campus)
Abstract: We will describe a Drinfeld type current presentation for Olshanski’s twisted Yangians of type AI (which are intimately related to the orthogonal Lie algebras), settling an open problem over 30 years. This presentation arises from two different approaches compatibly: Gauss decomposition and degeneration of affine i-quantum groups. We will also discuss about possible generalizations from the viewpoint of Satake diagrams and some applications. This is a joint work with Kang Lu and Weinan Zhang.