The classification of $p$-divisible groups over 2-adic discrete valuation rings

Abstract

Let ${\mathcal{O}}_K$ be a 2-adic discrete valuation ring with perfect residue field $k$. We classify $p$-divisible groups and $p$-power order finite flat group schemes over ${\mathcal{O}}_K$ in terms of certain Frobenius module over $\mathfrak{S}:=W(k)[[u]]$. We also show the compatibility with crystalline Dieudonné theory and associated Galois representations. Our approach differs from Lau's generalization of display theory, and we additionally obtain the the compatibility with associated Galois representations.

Final Version (with improved proofs and some re-ordering of sections). To appear in Math. Res. Lett

Cited by in corpus (1)

• Group schemes of period 2