Weight-λ\lambda Newton-stratum classicality conjecture

Let GG be the group in the source, let μ\mu be the specified minuscule cocharacter, let GDRλΨlaGDR^{\Psi-\mathrm{la}}_{\lambda} be the geometric locally analytic de Rham complex of weight λ\lambda, and let jb:F ⁣bF ⁣j_b:\mathscr{F}\!\ell^b\hookrightarrow\mathscr{F}\!\ell be the natural immersion for bB(G,μ1)b\in B(G,\mu^{-1}). Weight-λ\lambda classicality conjecture. For every bB(G,μ1)b\in B(G,\mu^{-1}), the group

Hd(F ⁣,jb!jbGDRλΨla)H^d(\mathscr{F}\!\ell,j_{b!}j_b^*GDR^{\Psi-\mathrm{la}}_{\lambda})

has a generalized Hecke eigenspace decomposition by classical eigensystems of weight λ\lambda. Consequently,

Hd(F ⁣,GDRλΨla)H^d(\mathscr{F}\!\ell,GDR^{\Psi-\mathrm{la}}_{\lambda})

has such a decomposition as well. This is a proposed classicality statement for the Newton-stratum pieces and their global geometric de Rham cohomology; no resolution is given in the supplied text.

Sources & referencesView supporting material

Primary source

Kojiro Matsumoto, “On the classicality theorem and its applications to the automorphy lifting theorem and the Breuil-Mezard conjecture in some GL_2(Q_p^2) cases”, arXiv:2512.04641 (2025).

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