The automorphism groups of Kummer surfaces in characteristic two and their complex analogues
Abstract
We calculate the automorphism group of the Kummer surface associated with a curve of genus 2 or the product of two elliptic curves in characteristic two under the assumption that the Kummer surface is a K3 surface. Moreover we discuss the complex K3 surfaces with the same Picard lattice as these Kummer surfaces. The paper has two appendices.
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