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Equivalence between (φ,Γ)-modules over B_{K,∞,A} and vector bundles on X_{K,A_□}^{la}/Γ_K^{la} beyond the Fredholm case

Determine whether, for a solid affinoid animated Q_{p,□}-algebra A that is not Fredholm, the natural fully faithful functor from the category of (φ,Γ_K)-modules over B_{K,∞,A} to the category of vector bundles on the quotient solid D-stack X_{K,A_□}^{la}/Γ_K^{la} is essentially surjective, hence an equivalence of categories.

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Background

The paper constructs a fully faithful functor from (φ,ΓK)-modules over B{K,∞,A} to vector bundles on the locally analytic Fargues–Fontaine quotient X_{K,A_□}{la}/Γ_K{la}. For Banach Q_p-algebras A, this functor is proved to be an equivalence, identifying these two frameworks.

For more general coefficients A that are not Fredholm, essential surjectivity of this functor remains unsettled. Establishing equivalence in this broader context would extend the reach of the geometric interpretation of (φ,Γ)-modules and strengthen the categorical foundations of families in p-adic Hodge theory.

This question is closely tied to understanding vector bundles on solid D-stacks over less restrictive coefficient algebras and to the general behavior of the locally analytic six-functor formalism under changes of coefficients.

References

If $A$ is not Fredholm, then the author does not know whether the natural fully faithful functor $$\VB_{B_{K,\infty,A}{\varphi,\Gamma_K}\hookrightarrow \Vect\left(X_{K,A_{\square}{\la}/\Gamma_K{\la}\right)$$ is an equivalence.

Finiteness and duality of cohomology of $(\varphi,Γ)$-modules and the 6-functor formalism of locally analytic representations (2504.01780 - Mikami, 2 Apr 2025) in Section 3 (Cohomology of (φ,Γ)-modules), following the proposition establishing the equivalence for Banach Q_p-algebras