Show commands:
SageMath
E = EllipticCurve("bl1")
E.isogeny_class()
Elliptic curves in class 8640.bl
sage: E.isogeny_class().curves
| LMFDB label | Cremona label | Weierstrass coefficients | j-invariant | Discriminant | Torsion structure | Modular degree | Faltings height | Optimality |
|---|---|---|---|---|---|---|---|---|
| 8640.bl1 | 8640bl1 | \([0, 0, 0, -132, -584]\) | \(-9199872/5\) | \(-138240\) | \([]\) | \(1152\) | \(-0.064910\) | \(\Gamma_0(N)\)-optimal |
| 8640.bl2 | 8640bl2 | \([0, 0, 0, 108, -2376]\) | \(6912/125\) | \(-2519424000\) | \([]\) | \(3456\) | \(0.48440\) |
Rank
sage: E.rank()
The elliptic curves in class 8640.bl have rank \(1\).
Complex multiplication
The elliptic curves in class 8640.bl do not have complex multiplication.Modular form 8640.2.a.bl
sage: E.q_eigenform(10)
Isogeny matrix
sage: E.isogeny_class().matrix()
The \(i,j\) entry is the smallest degree of a cyclic isogeny between the \(i\)-th and \(j\)-th curve in the isogeny class, in the LMFDB numbering.
\(\left(\begin{array}{rr} 1 & 3 \\ 3 & 1 \end{array}\right)\)
Isogeny graph
sage: E.isogeny_graph().plot(edge_labels=True)
The vertices are labelled with LMFDB labels.
