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

Let M\mathcal{M} be the moduli stack of parabolic connections, let PP^{\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 1μ2-1\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 PP^{\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.

Sources & referencesView supporting material

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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