Shifted quantum affine algebras, monoidal categorication and Langlands duality
By David Hernandez
Resolution in characteristic 0 using weighted blowing up
By Dan Abramovich
Appears in collection : Higher Structures in Holomorphic and Topological Field Theory
We will define and give some algebraic properties of cohomological Hall algebras of the stacks of coherent, resp. Higgs sheaves on a compacts Riemann surface X. We will in particular show how these are related to the structure of the cohomology rings of the moduli spaces of semistable vector bundles, resp. Higgs bundles on X.