2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/119101We build extensions of the arc rings, relate their centers to the cohomology rings of the Springer varieties, and categorify all level two representations of quantum sl(N).30 pages; 19 figuresQuantum AlgebraGeometric Topology57Q45Categorification of level two representations of quantum sl(N) via generalized arc ringstext