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The invariants of an elliptic curve over a number field $K$ are its

Each Weierstrass model for $$E$$ also has a discriminant, $\Delta$, and discriminant norm, $N(\Delta)$, which are not strictly invariants of $$E$$ since different models have, in general, different discriminants.

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• Last edited by John Cremona on 2018-12-18 10:25:57
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