Dieudonné; crystals and Wach modules for p-divisible groups

Bryden Cais, Eike Lau

Research output: Contribution to journalArticlepeer-review

2 Scopus citations


Let k be a perfect field of characteristic p > 2 and K an extension of F = FracW(k) contained in some F(μpr ). Using crystalline Dieudonné; theory, we provide a classification of p-divisible groups over R = OK[[t1,. ., td]] in terms of finite height (Ρ, τ)-modules over S := W(k)[[u, t1,. ., td]]. When d = 0, such a classification is a consequence of (a special case of) the theory of Kisin-Ren; in this setting, our construction gives an independent proof of this result, and moreover allows us to recover the Dieudonné; crystal of a p-divisible group from the Wach module associated to its Tate module by Berger-Breuil or by Kisin-Ren.

Original languageEnglish (US)
Pages (from-to)733-763
Number of pages31
JournalProceedings of the London Mathematical Society
Issue number4
StatePublished - 2017

ASJC Scopus subject areas

  • General Mathematics


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