The cut-by-curves conjecture for overconvergent F-isocrystals
The cut-by-curves conjecture for overconvergent F-isocrystals
Let be a variety, let be a boundary or compactification datum, and let denote a curve contained in the indicated variety. Write and for the convergent categories with and without the boundary structure, and for the overconvergent category. Cut-by-curves conjecture. An object of extends to if and only if, for every curve , its pullback to extends to . In particular, an object of extends to if and only if, for every curve , its pullback to extends to . This is known for unit-root objects, while weaker results require the underlying connection to extend to a strict neighborhood.
Sources & referencesView supporting material
Primary source
Kiran S. Kedlaya, “Notes on isocrystals”, arXiv:1606.01321 (2022).
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