Abstract
Abstract
We show that a nontrivial abelian variety over a Hilbertian field in which the weak Mordell–Weil theorem holds admits infinitely many torsors with period any given
n>1
that is not divisible by the characteristic. The corresponding statement with “period” replaced by “index” is plausible but open, and it seems much more challenging. We show that for every infinite, finitely generated field K, there is an elliptic curve
E_{/K}
which admits infinitely many torsors with index any given
n>1
.
Subject
Applied Mathematics,General Mathematics
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