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SageMath
E = EllipticCurve("k1")
E.isogeny_class()
Elliptic curves in class 20216k
sage: E.isogeny_class().curves
| LMFDB label | Cremona label | Weierstrass coefficients | j-invariant | Discriminant | Torsion structure | Modular degree | Faltings height | Optimality |
|---|---|---|---|---|---|---|---|---|
| 20216.b2 | 20216k1 | \([0, 1, 0, -120, 27904]\) | \(-4/7\) | \(-337224875008\) | \([2]\) | \(28512\) | \(0.89098\) | \(\Gamma_0(N)\)-optimal |
| 20216.b1 | 20216k2 | \([0, 1, 0, -14560, 663264]\) | \(3543122/49\) | \(4721148250112\) | \([2]\) | \(57024\) | \(1.2376\) |
Rank
sage: E.rank()
The elliptic curves in class 20216k have rank \(0\).
Complex multiplication
The elliptic curves in class 20216k do not have complex multiplication.Modular form 20216.2.a.k
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.
