English

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

Number Theory 2012-01-04 v3 Algebraic Geometry

Abstract

Let OK\mathscr{O}_K be a 2-adic discrete valuation ring with perfect residue field kk. We classify pp-divisible groups and pp-power order finite flat group schemes over OK\mathscr{O}_K in terms of certain Frobenius module over S:=W(k)[[u]]\mathfrak{S}:=W(k)[[u]]. We also show the compatibility with crystalline Dieudonn\'e 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.

Keywords

Cite

@article{arxiv.1007.1904,
  title  = {The classification of $p$-divisible groups over 2-adic discrete valuation rings},
  author = {Wausu Kim},
  journal= {arXiv preprint arXiv:1007.1904},
  year   = {2012}
}

Comments

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

R2 v1 2026-06-21T15:47:05.687Z