Monoidal recovery conjecture for the principal block

From papers

Let N~\widetilde{\mathcal{N}} be the Springer resolution, let u(Gq)u(G_q) be the small quantum group, let PrinBlockdg(u(Gq))\operatorname{PrinBlock}_{\mathrm{dg}}(u(G_q)) be its principal block, and suppose the monoidal correspondence has functors η\eta^* from the Springer resolution to XqX_q and κ\kappa^* from the small quantum group representations to XqX_q. Monoidal recovery conjecture. The push-pull functor restricts to an equivalence

ηκ:PrinBlockdg(u(Gq))QCohdg(N~).\eta_*\kappa^*:\operatorname{PrinBlock}_{\mathrm{dg}}(u(G_q))\overset{\sim}{\longrightarrow}\operatorname{QCoh}_{\mathrm{dg}}(\widetilde{\mathcal{N}}).

This is proposed to recover the equivalence of Arkhipov–Bezrukavnikov–Ginzburg and Bezrukavnikov–Lachowska in a manifestly monoidal way.

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Sources & referencesView supporting material

Primary source

Cris Negron and Julia Pevtsova, “The half-quantum flag variety and representations for small quantum groups”, arXiv:2212.12198 (2022).

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