Derived Langlands equivalence for parabolic connections via the partially compactified Radon transform

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Let M\mathcal{M} be the moduli stack of parabolic connections, let P∨P^{\vee} be the dual projective space, and let DνD_{\boldsymbol\nu} be the corresponding twisted differential-operator ring. Write Dqc(M)−\mathcal{D}_{qc}(\mathcal{M})^- for the component on which −1∈μ2-1\in\mu_2 acts as −1-1 on every cohomology sheaf. Derived Langlands equivalence via the partially compactified Radon transform. The connected component of the derived category of quasi-coherent sheaves on M\mathcal{M} is equivalent to the derived category of DνD_{\boldsymbol\nu}-modules on P∨P^{\vee}:

L′ ⁣:Dqc(M)−→∼D(P∨,Dν).L'\colon\mathcal{D}_{qc}(\mathcal{M})^-\xrightarrow{\sim}\mathcal{D}(P^{\vee},D_{\boldsymbol\nu}).

The source presents this as an equivalent formulation conditional on the partially compactified Radon transform conjecture, so it remains open with that conjecture in the supplied text.

References

Primary source

Yuki Matsubara, “Cohomology of vector bundles on the moduli space of parabolic connections on P^1 minus 5 points”, arXiv:2510.12578 (2025).

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