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SageMath
E = EllipticCurve("ey1")
E.isogeny_class()
Elliptic curves in class 20160.ey
sage: E.isogeny_class().curves
LMFDB label | Cremona label | Weierstrass coefficients | j-invariant | Discriminant | Torsion structure | Modular degree | Faltings height | Optimality |
---|---|---|---|---|---|---|---|---|
20160.ey1 | 20160ch3 | \([0, 0, 0, -64812, 6350384]\) | \(157551496201/13125\) | \(2508226560000\) | \([2]\) | \(65536\) | \(1.4231\) | |
20160.ey2 | 20160ch2 | \([0, 0, 0, -4332, 84656]\) | \(47045881/11025\) | \(2106910310400\) | \([2, 2]\) | \(32768\) | \(1.0765\) | |
20160.ey3 | 20160ch1 | \([0, 0, 0, -1452, -20176]\) | \(1771561/105\) | \(20065812480\) | \([2]\) | \(16384\) | \(0.72992\) | \(\Gamma_0(N)\)-optimal |
20160.ey4 | 20160ch4 | \([0, 0, 0, 10068, 528176]\) | \(590589719/972405\) | \(-185829489377280\) | \([2]\) | \(65536\) | \(1.4231\) |
Rank
sage: E.rank()
The elliptic curves in class 20160.ey have rank \(0\).
Complex multiplication
The elliptic curves in class 20160.ey do not have complex multiplication.Modular form 20160.2.a.ey
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.