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arXiv · 1611.07444

Singular TQFTs, foams and type D arc algebras

Michael Ehrig·Daniel Tubbenhauer·Arik Wilbert
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Abstract

We combinatorially describe the $2$-category of singular cobordisms, called (rank one) foams, which governs the functorial version of Khovanov homology. As an application we topologically realize the type $\mathrm{D}$ arc algebra using this singular cobordism construction.

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Michael Ehrig, Daniel Tubbenhauer, Arik Wilbert. 2019-09-12. Singular TQFTs, foams and type D arc algebras. https://doi.org/10.25537/dm.2019v24.1585-1655

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