Categorification of genus 2 DAHA
演讲者
时间
2026年09月11日 13:00 至 14:30
地点
A3-2a-302
线上
Zoom 361 038 6975
(BIMSA)
摘要
S. Arthamonov and Sh. Shakirov introduced three commuting operators O_{ij}, i=1,2,3 on the algebra of symmetric polynomials \mathbb{Z}((q,t))[x_1,x_2,x_3]. Their joint eigenvectors are called rank 2 MacDonald polynomials. It was unknown is thee a scalar product which makes these polynomials orthogonally. We study the category of representations of Lie superalgebra constructed from the exceptional superalgebra D(2|1,\alpha). We construct three endofunctors on this category, whose action on the Grothendieck group coincide with O_{ij}. These endofunctors are orthogonal with respect to Ext pairing. Using this property we get that the shadow of this pairing on the Grothendieck group makes MacDonald polynomials orthogonal
演讲者介绍
Ievgen Makedonskyi于俄罗斯高等经济研究大学获得数学博士学位,先后在俄罗斯高等经济研究大学、马克斯普朗克数学研究所、东京大学、斯科尔科沃科技大学、德国耶拿大学任职,2022年加入北京雁栖湖应用数学研究院任助理研究员,研究兴趣包括李代数、多项式导子、仿射Kac-Moody李代数、Weyl和Demazure模、非对称Macdonald多项式、近世代数、弧簇等。