We give a purely combinatorial formula for evaluating closed, decorated foams. Our evaluation gives an integral polynomial and is directly connected to an integral, equivariant version of colored Khovanov–Rozansky link homology categorifying the link polynomial. We also provide connections to the equivariant cohomology rings of partial flag varieties.
Cite this article
Louis-Hadrien Robert, Emmanuel Wagner, A closed formula for the evaluation of foams. Quantum Topol. 11 (2020), no. 3, pp. 411–487DOI 10.4171/QT/139