Computing a square on Khovanov homology
Computing a square on Khovanov homology
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Robert Lipshitz, Minerva Distinguished Visitor & University of Oregon
Fine Hall 314
Livestream: https://youtube.com/live/nygzk8FU8MQ
This lecture finishes the series by describing how to compute the Steenrod square $\mathrm{Sq}^2: \mathit{Kh}^{i,j}(K;\mathbb{F}_2)\to \mathit{Kh}^{i+2,j}(K;\mathbb{F}_2)$ induced by the stable homotopy refinement of Khovanov homology.