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SageMath
E = EllipticCurve("bg1")
E.isogeny_class()
Elliptic curves in class 107800.bg
sage: E.isogeny_class().curves
| LMFDB label | Cremona label | Weierstrass coefficients | j-invariant | Discriminant | Torsion structure | Modular degree | Faltings height | Optimality |
|---|---|---|---|---|---|---|---|---|
| 107800.bg1 | 107800bm1 | \([0, 0, 0, -46550, 3730125]\) | \(379275264/15125\) | \(444860281250000\) | \([2]\) | \(414720\) | \(1.5772\) | \(\Gamma_0(N)\)-optimal |
| 107800.bg2 | 107800bm2 | \([0, 0, 0, 20825, 13634250]\) | \(2122416/171875\) | \(-80883687500000000\) | \([2]\) | \(829440\) | \(1.9238\) |
Rank
sage: E.rank()
The elliptic curves in class 107800.bg have rank \(1\).
Complex multiplication
The elliptic curves in class 107800.bg do not have complex multiplication.Modular form 107800.2.a.bg
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.
