Let k be a perfect field of characteristic p ≥ 5. Let X be a nonsupersingular K3 surface over k and Ψ the enlarged formal Brauer group associated to X. In this paper, we show that the local moduli space of X, with trivial associated deformation of Ψ, admits a natural p-divisible formal group structure.
Journal Article. 3463 words. Illustrated.
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