Spectral Sequences in Lasagna Theory

Amey Joshi

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arXiv · 2608.23909

Spectral Sequences in Lasagna Theory

Amey Joshi

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Abstract

We use Khovanov-Floer theories and their spectral sequences to construct differentials on the corresponding skein-lasagna modules. Then we show that for 2-handlebodies, a spectral sequence of TQFTs coming from a Khovanov-Floer theory gives a spectral sequence of lasagna modules under the aforementioned differential. As a corollary, we recover the rank inequality between the Khovanov and Lee lasagna modules. We also prove certain properties like the connect-sum formula that these spectral sequences satisfy.

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Amey Joshi. 2026-08-24. Spectral Sequences in Lasagna Theory. https://arxiv.org/abs/2608.23909

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