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SageMath
E = EllipticCurve("c1")
E.isogeny_class()
Elliptic curves in class 19220.c
sage: E.isogeny_class().curves
LMFDB label | Cremona label | Weierstrass coefficients | j-invariant | Discriminant | Torsion structure | Modular degree | Faltings height | Optimality |
---|---|---|---|---|---|---|---|---|
19220.c1 | 19220b3 | \([0, -1, 0, -39721, 3059646]\) | \(488095744/125\) | \(1775007362000\) | \([2]\) | \(45360\) | \(1.3363\) | |
19220.c2 | 19220b4 | \([0, -1, 0, -34916, 3822680]\) | \(-20720464/15625\) | \(-3550014724000000\) | \([2]\) | \(90720\) | \(1.6829\) | |
19220.c3 | 19220b1 | \([0, -1, 0, -1281, -11710]\) | \(16384/5\) | \(71000294480\) | \([2]\) | \(15120\) | \(0.78704\) | \(\Gamma_0(N)\)-optimal |
19220.c4 | 19220b2 | \([0, -1, 0, 3524, -82824]\) | \(21296/25\) | \(-5680023558400\) | \([2]\) | \(30240\) | \(1.1336\) |
Rank
sage: E.rank()
The elliptic curves in class 19220.c have rank \(1\).
Complex multiplication
The elliptic curves in class 19220.c do not have complex multiplication.Modular form 19220.2.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.
\(\left(\begin{array}{rrrr} 1 & 2 & 3 & 6 \\ 2 & 1 & 6 & 3 \\ 3 & 6 & 1 & 2 \\ 6 & 3 & 2 & 1 \end{array}\right)\)
Isogeny graph
sage: E.isogeny_graph().plot(edge_labels=True)
The vertices are labelled with LMFDB labels.