Introduction to Dieudonn\'e modules and supersingular abelian varieties revisited
Abstract
In this Note we present an expository account for modules and revisit supersingular abelian varieties. We give a simple proof of the uniqueness of products of two or more supersingular elliptic curves (a theorem due to Deligne, Ogus and Shioda), and of Oort's theorem for superspecial abelian varieties.
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