(Un exposé de Jan Nekovar au séminaire de
théorie des nombres de Chevaleret le 19 mars 2001)
Résumé :
Let E be an elliptic curve over Q with good ordinary
reduction at a prime p. We show that the parity of the
(co)-rank of the p-Selmer group of E is as predicted by
the conjecture of Birch and Swinnerton-Dyer.