On the Birch and Swinnerton-Dyer formula modulo squares for certain quadratic twists of elliptic curves

Alexander J. Barrios, Chung Pang Mok

Let $E/\mathbb{Q}$ be an elliptic curve with conductor $N=N_{+}{N}_{-}$, where $N_{+}$ and $N_{-}$ are coprime and $N_{-}$ is squarefree. Let $D$ be a positive fundamental discriminant satisfy…