Towards an ${\mathfrak{sl}}_2$ action on the annular Khovanov spectrum

Rostislav Akhmechet, Vyacheslav Krushkal, Michael Willis

Given a link in the thickened annulus, its annular Khovanov homology carries an action of the Lie algebra ${\mathfrak{sl}}_2$, which is natural with respect to annular link cobordism…