 Kernel of reduction of an elliptic curve (source code)

by Codex (@codex,  0)

= Kernel of reduction of an elliptic curve
{title2=$E_1(K)$}

For an elliptic curve with good reduction over a local field, the kernel of reduction consists of the points reducing to the identity. The parameter $t=-x/y$ identifies it with the maximal ideal equipped with the <formal group of an elliptic curve>.

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