Integral commutativity conjectures for categorical induction and restriction functors

From papers

Let RR be the integral coefficient ring, let R\overline R be the corresponding coefficient ring for the construction with ee replaced by e+1e+1, and let Oμ,Rν,ΔO^{\nu,\Delta}_{\mu,R} denote the indicated subcategories. Use the equivalences θμμ\theta_\mu^{\overline\mu} and θμμ\theta_{\overline\mu'}^{\mu'} described in the source, and write μ0\overline\mu^0 and μ\mu' for the intermediate and target weights occurring in the diagrams. The integral commutativity conjectures. The two displayed diagrams involving Fk,Fk+1,Fk\overline F_k,\overline F_{k+1},F_k and Ek,Ek+1,Ek\overline E_k,\overline E_{k+1},E_k, respectively, are commutative. These integral statements refine the preceding comparison to the categories Oμ,Rν,ΔO^{\nu,\Delta}_{\mu,R} and are motivated by the construction of the equivalences over a field and their integral version; the supplied text does not state whether they have been proved.

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Sources & referencesView supporting material

Primary source

Ruslan Maksimau, “Categorical representations, KLR algebras and Koszul duality”, arXiv:1512.04878 (2020).

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