Fargues–Fontaine cohomology conjecture for smooth rigid spaces

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Let CC be an algebraically closed pp-adic field, let FF⁡C\operatorname{FF}_C be the Fargues–Fontaine curve with distinguished point ∞\infty, and let XX be a quasicompact separated smooth rigid space over CC. An overconvergent model X†X^\dagger means a model for which the overconvergent de Rham and crystalline cohomology groups below are defined. Fargues–Fontaine cohomology conjecture. There should be a cohomology theory HFF⁡Ci(X)H^i_{\operatorname{FF}_C}(X) taking values in vector bundles on FF⁡C\operatorname{FF}_C, such that, if XX has an overconvergent model X†X^\dagger, its fibre at ∞\infty is

HdRi(X†/C),H^i_{\mathrm{dR}}(X^\dagger/C),

and its completion at ∞\infty is

Hcrysi(X†/BdR+).H^i_{\mathrm{crys}}(X^\dagger/B_{\mathrm{dR}}^+).

The conjecture extends the Fargues–Fontaine modification formalism beyond proper smooth spaces and formal models. It is related to work of Colmez–Nizioł and to the overconvergent theories of Große-Klönne; no resolution is given in the source.

References

Primary source

Peter Scholze, “p-adic geometry”, arXiv:1712.03708 (2017).

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