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Module Categories As Spans (2404.06408v1)
Published 9 Apr 2024 in math.CT
Abstract: We realize module functors and module natural transforms as spans of monoidal categories. We also discuss the generalizations to algebras and modules within an arbitrary monoidal 2-category, including $\mathbf{2Vect}$, $\mathbf{2Rep}(G)$, $\mathbf{2Vect}\pi_G$, $\mathbf{Mod}(\mathcal{B})$, $\mathbf{MCat}$ and $\mathbf{BrCat}$.
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