engleski

Torsion groups of elliptic curves over quadratic fields

We describe methods for determining all possible torsion subgroups of an elliptic curve de fined over a fixed quadratic fi eld. We give a brief overview of known results and methods and state theorems on all torsion subgroups that can appear over four real quadratic fields.

Torsion subgroups ; Elliptic curves ; Quadratic fields

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