Knot homology of cabled torus knots and sheaves on Hilbert scheme of points on the plane

Seminar: 
Geometry, Symmetry and Physics
Event time: 
Monday, October 17, 2022 - 4:30pm
Location: 
LOM 214
Speaker: 
Alexei Oblomkov
Speaker affiliation: 
UMass Amherst
Event description: 

Talk is based on the joint work with Gorsky, Mazin and Rozansky.
I will explain a construction of coherent sheaf on Hilb_n(C^2) whose global sections compute the triply graded homology of cabling of torus knot. I match the answer with the cohomology of the compactified Jacobian of the corresponding singularity.