The cohomological product formula for arithmetic coefficients on GG-bundle stacks

Let XX be a smooth proper curve over Fp\mathbb{F}_p, let GXG\to X satisfy the stated smoothness, affine, semisimplicity, simple-connectedness, and connected-fiber hypotheses, and let EDholb(X)\mathcal{E}\in D^b_{\mathrm{hol}}(X) be an augmented E\mathbb{E}_\infty-ring. Let hBundleGh_{\mathrm{Bundle}_G} and hxh_x be the maps defining the global and local pullbacks of E\mathcal{E}. The cohomological product-formula conjecture.

Tr(φ1H(BundleG(X×SpecFpSpecFp),hBundleGE))=xXTr(φ1H(BundleG({x}×SpecFp)SpecFp),hxEx)).\mathrm{Tr}(\varphi^{-1}|\mathrm{H}^*(\mathrm{Bundle}_G(X\times_{\mathrm{Spec}\mathbb{F}_p}\mathrm{Spec}\overline{\mathbb{F}}_p),h_{\mathrm{Bundle}_G}^*\mathcal{E})) =\prod_{x\in X}\mathrm{Tr}(\varphi^{-1}|\mathrm{H}^*(\mathrm{Bundle}_G(\{x\}\times_{\mathrm{Spec}\mathbb{F}_p)}\mathrm{Spec}\overline{\mathbb{F}}_p),h_x^*\mathcal{E}_x)).

This extends the preceding uncoefficiented product formula to holonomic arithmetic D\mathcal{D}-module coefficients; the supplied text gives no resolution.

Sources & referencesView supporting material

Primary source

Xin Tong, “-Categorical Perverse p-adic Differential Equations over Stacks”, arXiv:2201.05003 (2022).

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