Speaker:
Grzegorz Banaszak
Institution:
Adam Mickiewicz University, Poznan, Poland
Time:
Tuesday, April 21, 2009 - 2:00pm
Location:
RH 306
Let $A/F$ be an abelian variety over a number field F, let $P \in A(F)$ and $\Lambda \subset A(F)$ be a subgroup of the Mordell-Weil group. For a prime $v$ of good reduction let $r_v : A(F) \rightarrow A_v(k_v)$ be the reduction map. During my talk I will show that the condition $r_v(P) \in r_v(\Lambda)$ for almost all primes $v$ imply that $P \in \Lambda + A(F)_{tor}$ for a wide class of abelian varieties.