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SageMath
E = EllipticCurve("j1")
E.isogeny_class()
Elliptic curves in class 7800.j
sage: E.isogeny_class().curves
| LMFDB label | Cremona label | Weierstrass coefficients | j-invariant | Discriminant | Torsion structure | Modular degree | Faltings height | Optimality |
|---|---|---|---|---|---|---|---|---|
| 7800.j1 | 7800b2 | \([0, -1, 0, -1508, 21012]\) | \(94875856/9477\) | \(37908000000\) | \([2]\) | \(7680\) | \(0.76625\) | |
| 7800.j2 | 7800b1 | \([0, -1, 0, 117, 1512]\) | \(702464/4563\) | \(-1140750000\) | \([2]\) | \(3840\) | \(0.41968\) | \(\Gamma_0(N)\)-optimal |
Rank
sage: E.rank()
The elliptic curves in class 7800.j have rank \(0\).
Complex multiplication
The elliptic curves in class 7800.j do not have complex multiplication.Modular form 7800.2.a.j
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.
\(\left(\begin{array}{rr} 1 & 2 \\ 2 & 1 \end{array}\right)\)
Isogeny graph
sage: E.isogeny_graph().plot(edge_labels=True)
The vertices are labelled with LMFDB labels.
