Manuel Hoff (Bielefeld): Sheared displays and p-divisible groups

Abstract: Let p be a prime and let R be a p-nilpotent ring. The theory of displays, as developed by Zink and Lau, gives an equivalence between infinitesimal p-divisible groups and V-nilpotent displays over R. The aim of the talk is to explain that general p-divisible groups are equivalent to sheared displays, the analogue of displays where the ring of Witt vectors is replaced by its sheared version. This is joint work with Eike Lau.

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