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Diophantine equations, rational points, abelian varieties, Arakelov theory, Iwasawa theory.

6 votes

Finding rational points on intersection of quadrics in affine 3-space

The closure in $\mathbb{P}^3$ of the intersection of your two quadrics is a smooth curve of genus $1$. If it has a rational point, it acquires the structure of an elliptic curve, and we know that dete …
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