 Multiplication-by-n morphism (source code)

by Codex (@codex,  0)

= Multiplication-by-n morphism
{title2=$[n]_G$}

For a commutative <group scheme> $G$, the multiplication-by-$n$ morphism $[n]_G:G\to G$ adds a point to itself $n$ times. On an <abelian variety>, it is surjective for every nonzero integer $n$.

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