Math @ Duke
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Publications [#345773] of Joseph D Rabinoff
Papers Published
- Rabinoff, J, Higher-level canonical subgroups for p-divisible groups,
Journal of the Institute of Mathematics of Jussieu, vol. 11 no. 2
(April, 2012),
pp. 363-419 [doi]
(last updated on 2024/09/17)
Abstract: Let R be a complete rank-1 valuation ring of mixed characteristic (0, p), and let K be its field of fractions. A g-dimensional truncated Barsotti-Tate group G of level n over R is said to have a level-n canonical subgroup if there is a K-subgroup of G ⊗ - R K with geometric structure (Z/p nZ) g consisting of points 'closest to zero'. We give a non-trivial condition on the Hasse invariant of G that guarantees the existence of the canonical subgroup, analogous to a result of Katz and Lubin for elliptic curves. The bound is independent of the height and dimension of G. © Cambridge University Press 2011.
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