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SageMath
E = EllipticCurve("bb1")
E.isogeny_class()
Elliptic curves in class 4400bb
sage: E.isogeny_class().curves
| LMFDB label | Cremona label | Weierstrass coefficients | j-invariant | Discriminant | Torsion structure | Modular degree | Faltings height | Optimality |
|---|---|---|---|---|---|---|---|---|
| 4400.n2 | 4400bb1 | \([0, 0, 0, -500, -3125]\) | \(442368/121\) | \(3781250000\) | \([2]\) | \(1920\) | \(0.54549\) | \(\Gamma_0(N)\)-optimal |
| 4400.n1 | 4400bb2 | \([0, 0, 0, -7375, -243750]\) | \(88723728/11\) | \(5500000000\) | \([2]\) | \(3840\) | \(0.89206\) |
Rank
sage: E.rank()
The elliptic curves in class 4400bb have rank \(0\).
Complex multiplication
The elliptic curves in class 4400bb do not have complex multiplication.Modular form 4400.2.a.bb
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 Cremona 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 Cremona labels.
