3 papers
math.RT2020
Deformed W-algebras in type A for rectangular nilpotent
Andrei Neguţ
For any natural numbers n,r, we construct an algebra P_n^r via generators and quadratic relations, and show that it deforms the W-algebra of gl_{nr} with respect to a nilpotent wit…
math.AG2019
Motivic decompositions for the Hilbert scheme of points of a K3 surface
Andrei Neguţ, Georg Oberdieck, Qizheng Yin
We construct an explicit, multiplicative Chow-Künneth decomposition for the Hilbert scheme of points of a K3 surface. We further refine this decomposition with respect to the actio…
math.AG2019
Lehn's formula in Chow and Conjectures of Beauville and Voisin
Davesh Maulik, Andrei Neguţ
The Beauville-Voisin conjecture for a hyperkähler manifold X states that the subring of the Chow ring A^*(X) generated by divisor classes and Chern characters of the tangent bundle…