Abstract
Talk on 27-IV-2000 in the 'automorphic semester' Centre Emile Borel at Institut Henri Poincare
We consider p-divisible groups (also called Barsotti-Tate groups) in characteristic p, abelian varieties, their deformations, and we draw some conclusions. For a p-divisible group (in characteristic p) we can define its Newton polygon. This is invariant under
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