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Lectures on SL(3) foams and link homology
Mikhail Khovanov, Dmitry Solovyev
https://arxiv.org/abs/2507.17119 https://arxiv.org/pdf/2507.17119

Lectures on SL(3) foams and link homology
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 $\mathsf{SL}(3)$ foams and the associated topological theory of trivalent planar graphs and foam cobordisms between them. A categorification of the Kuperberg quantum $\mathfrak{sl}_3$ web and link invariant and the Robert-Wagner $\mathsf{SL}(N)$ foam eva…