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SageMath
E = EllipticCurve("cj1")
E.isogeny_class()
Elliptic curves in class 8400cj
sage: E.isogeny_class().curves
LMFDB label | Cremona label | Weierstrass coefficients | j-invariant | Discriminant | Torsion structure | Modular degree | Faltings height | Optimality |
---|---|---|---|---|---|---|---|---|
8400.ci2 | 8400cj1 | \([0, 1, 0, 9792, 33588]\) | \(2595575/1512\) | \(-60480000000000\) | \([]\) | \(25920\) | \(1.3339\) | \(\Gamma_0(N)\)-optimal |
8400.ci1 | 8400cj2 | \([0, 1, 0, -140208, 21333588]\) | \(-7620530425/526848\) | \(-21073920000000000\) | \([]\) | \(77760\) | \(1.8832\) |
Rank
sage: E.rank()
The elliptic curves in class 8400cj have rank \(0\).
Complex multiplication
The elliptic curves in class 8400cj do not have complex multiplication.Modular form 8400.2.a.cj
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.
\(\left(\begin{array}{rr} 1 & 3 \\ 3 & 1 \end{array}\right)\)
Isogeny graph
sage: E.isogeny_graph().plot(edge_labels=True)
The vertices are labelled with Cremona labels.