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SageMath
E = EllipticCurve("s1")
E.isogeny_class()
Elliptic curves in class 15680.s
sage: E.isogeny_class().curves
| LMFDB label | Cremona label | Weierstrass coefficients | j-invariant | Discriminant | Torsion structure | Modular degree | Faltings height | Optimality |
|---|---|---|---|---|---|---|---|---|
| 15680.s1 | 15680dt2 | \([0, 1, 0, -76225, -8125377]\) | \(544737993463/20000\) | \(1798307840000\) | \([2]\) | \(61440\) | \(1.4391\) | |
| 15680.s2 | 15680dt1 | \([0, 1, 0, -4545, -140225]\) | \(-115501303/25600\) | \(-2301834035200\) | \([2]\) | \(30720\) | \(1.0925\) | \(\Gamma_0(N)\)-optimal |
Rank
sage: E.rank()
The elliptic curves in class 15680.s have rank \(0\).
Complex multiplication
The elliptic curves in class 15680.s do not have complex multiplication.Modular form 15680.2.a.s
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.
