Abstract
Let A′ be a complete characteristic (0,p) discrete valuation ring with absolute ramification degree e and a perfect residue field. We are interested in studying the category FFA' of finite flat commutative group schemes over A′ withp-power order. When e= 1, Fontaine formulated the purely ‘linear algebra’ notion of a finite Honda system over A′ and constructed an anti-equivalence of categories betweenineFFA'> and the category of finite Honda systems over A′ when p> 2. We generalize this theory to the case e≤ − 1.
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