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SageMath
E = EllipticCurve("r1")
E.isogeny_class()
Elliptic curves in class 23120.r
sage: E.isogeny_class().curves
LMFDB label | Cremona label | Weierstrass coefficients | j-invariant | Discriminant | Torsion structure | Modular degree | Faltings height | Optimality |
---|---|---|---|---|---|---|---|---|
23120.r1 | 23120a4 | \([0, 0, 0, -30923, 2092938]\) | \(132304644/5\) | \(123584353280\) | \([2]\) | \(40960\) | \(1.2144\) | |
23120.r2 | 23120a2 | \([0, 0, 0, -2023, 29478]\) | \(148176/25\) | \(154480441600\) | \([2, 2]\) | \(20480\) | \(0.86782\) | |
23120.r3 | 23120a1 | \([0, 0, 0, -578, -4913]\) | \(55296/5\) | \(1931005520\) | \([2]\) | \(10240\) | \(0.52125\) | \(\Gamma_0(N)\)-optimal |
23120.r4 | 23120a3 | \([0, 0, 0, 3757, 167042]\) | \(237276/625\) | \(-15448044160000\) | \([2]\) | \(40960\) | \(1.2144\) |
Rank
sage: E.rank()
The elliptic curves in class 23120.r have rank \(1\).
Complex multiplication
The elliptic curves in class 23120.r do not have complex multiplication.Modular form 23120.2.a.r
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.
\(\left(\begin{array}{rrrr} 1 & 2 & 4 & 4 \\ 2 & 1 & 2 & 2 \\ 4 & 2 & 1 & 4 \\ 4 & 2 & 4 & 1 \end{array}\right)\)
Isogeny graph
sage: E.isogeny_graph().plot(edge_labels=True)
The vertices are labelled with LMFDB labels.