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For an abelian variety $A$ over a field $F$, the geometric endomorphism ring of $A$ is $\End(A_{\overline{F}})$, the endomorphism ring of the base change of $A$ to an algebraic closure $\overline{F}$ of $F$.

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• Last edited by John Voight on 2020-09-26 15:20:37
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