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SageMath
E = EllipticCurve("ct1")
E.isogeny_class()
Elliptic curves in class 100800ct
sage: E.isogeny_class().curves
LMFDB label | Cremona label | Weierstrass coefficients | j-invariant | Discriminant | Torsion structure | Modular degree | Faltings height | Optimality |
---|---|---|---|---|---|---|---|---|
100800.ig2 | 100800ct1 | \([0, 0, 0, -7020, 97200]\) | \(59319/28\) | \(18059231232000\) | \([2]\) | \(221184\) | \(1.2379\) | \(\Gamma_0(N)\)-optimal |
100800.ig1 | 100800ct2 | \([0, 0, 0, -93420, 10983600]\) | \(139798359/98\) | \(63207309312000\) | \([2]\) | \(442368\) | \(1.5845\) |
Rank
sage: E.rank()
The elliptic curves in class 100800ct have rank \(1\).
Complex multiplication
The elliptic curves in class 100800ct do not have complex multiplication.Modular form 100800.2.a.ct
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.