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Foam evaluation and its applications

Mikhail Khovanov - Columbia University

Location:  Hill Center 705
Date & time: Wednesday, 02 November 2022 at 3:30PM - 4:30PM

Abstract: Foams are decorated two-dimensional CW-complexes with prescribed singularities embedded in 3-space. They naturally appear in link homology and categorification. In the talk we'll explain the state sum model for foam evaluation that relates to both the Four-Color Theorem and a categorification of the Kuperberg bracket (the quantum SL(3) link invariant).

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