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SageMath
E = EllipticCurve("c1")
E.isogeny_class()
Elliptic curves in class 22218.c
sage: E.isogeny_class().curves
LMFDB label | Cremona label | Weierstrass coefficients | j-invariant | Discriminant | Torsion structure | Modular degree | Faltings height | Optimality |
---|---|---|---|---|---|---|---|---|
22218.c1 | 22218b2 | \([1, 1, 0, -1011, 11925]\) | \(9407293631/31752\) | \(386326584\) | \([2]\) | \(13824\) | \(0.51175\) | |
22218.c2 | 22218b1 | \([1, 1, 0, -91, -35]\) | \(6967871/4032\) | \(49057344\) | \([2]\) | \(6912\) | \(0.16518\) | \(\Gamma_0(N)\)-optimal |
Rank
sage: E.rank()
The elliptic curves in class 22218.c have rank \(2\).
Complex multiplication
The elliptic curves in class 22218.c do not have complex multiplication.Modular form 22218.2.a.c
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.