Newton-stratum classicality conjecture for geometric de Rham cohomology
Newton-stratum classicality conjecture for geometric de Rham cohomology
Let , let be the specified minuscule cocharacter, and let be the Newton stratum indexed by . Write for the natural immersion. Newton-stratum classicality conjecture. For every , the cohomology group
has a generalized Hecke eigenspace decomposition by classical eigensystems. The source presents this as a more precise conjecture reducing the preceding classicality conjecture via excision; the supplied evidence leaves it open.
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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