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SageMath
E = EllipticCurve("c1")
E.isogeny_class()
Elliptic curves in class 9240c
sage: E.isogeny_class().curves
LMFDB label | Cremona label | Weierstrass coefficients | j-invariant | Discriminant | Torsion structure | Modular degree | Faltings height | Optimality |
---|---|---|---|---|---|---|---|---|
9240.f4 | 9240c1 | \([0, -1, 0, -71, -6180]\) | \(-2508888064/1037680875\) | \(-16602894000\) | \([2]\) | \(7680\) | \(0.64020\) | \(\Gamma_0(N)\)-optimal |
9240.f3 | 9240c2 | \([0, -1, 0, -5516, -154284]\) | \(72516235474384/833765625\) | \(213444000000\) | \([2, 2]\) | \(15360\) | \(0.98678\) | |
9240.f1 | 9240c3 | \([0, -1, 0, -88016, -10021284]\) | \(73639964854838596/9904125\) | \(10141824000\) | \([2]\) | \(30720\) | \(1.3333\) | |
9240.f2 | 9240c4 | \([0, -1, 0, -10136, 146940]\) | \(112477694831716/56396484375\) | \(57750000000000\) | \([2]\) | \(30720\) | \(1.3333\) |
Rank
sage: E.rank()
The elliptic curves in class 9240c have rank \(1\).
Complex multiplication
The elliptic curves in class 9240c do not have complex multiplication.Modular form 9240.2.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 Cremona numbering.
\(\left(\begin{array}{rrrr} 1 & 2 & 4 & 4 \\ 2 & 1 & 2 & 2 \\ 4 & 2 & 1 & 4 \\ 4 & 2 & 4 & 1 \end{array}\right)\)
Isogeny graph
sage: E.isogeny_graph().plot(edge_labels=True)
The vertices are labelled with Cremona labels.