Full p-adic coherence conjecture for local-model special fibers

Let \calM\calG,μ\onsch\calM_{\calG,\mu}^{\on{sch}} be the scheme-theoretic local model, let kEk_E be the residue field of the reflex field, and let \calA\calG,μ\oncan\calA_{\calG,\mu}^{\on{can}} be the canonical deperfection of the admissible locus. There is a natural morphism

\calA\calG,μ\oncan\calM\calG,μ,kE\onsch.\calA_{\calG,\mu}^{\on{can}}\rightarrow\calM_{\calG,\mu,k_E}^{\on{sch}}.

Full p-adic coherence conjecture. This natural morphism is always an isomorphism. The assertion is already known under some hypotheses, while the paper identifies a small number of remaining wild cases and outlines reductions for proving them.

Sources & referencesView supporting material

Primary source

Johannes Anschütz, Ian Gleason, João Lourenço and Timo Richarz, “On the p-adic theory of local models”, arXiv:2201.01234 (2026).

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