Lectures on SL(3) foams and link homology
Abstract
These notes are based on the three lectures that one of the authors gave at Tsinghua University in the summer of 2023 as part of the workshop on Geometric Representation Theory and Applications. They contain an introduction to the evaluation of SL(3) foams and the associated topological theory of trivalent planar graphs and foam cobordisms between them. A categorification of the Kuperberg quantum sl3 web and link invariant and the Robert-Wagner SL(N) foam evaluation are reviewed as well.
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