The intrinsic subgroup of an elliptic curve and Mazur's torsion theorem

Takao Yamazaki, Yifan Yang, Hwajong Yoo +1

We define and study a biadditive symmetric (not necessarily perfect) pairing on the torsion part $\mathrm{Pic}(X{)}_{\mathrm{tors}}$ of the Picard group of a smooth projective curve…