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SageMath
E = EllipticCurve("bu1")
E.isogeny_class()
Elliptic curves in class 22848bu
sage: E.isogeny_class().curves
LMFDB label | Cremona label | Weierstrass coefficients | j-invariant | Discriminant | Torsion structure | Modular degree | Faltings height | Optimality |
---|---|---|---|---|---|---|---|---|
22848.e4 | 22848bu1 | \([0, -1, 0, 111, 369]\) | \(9148592/9639\) | \(-157925376\) | \([2]\) | \(6144\) | \(0.25985\) | \(\Gamma_0(N)\)-optimal |
22848.e3 | 22848bu2 | \([0, -1, 0, -609, 3969]\) | \(381775972/127449\) | \(8352497664\) | \([2, 2]\) | \(12288\) | \(0.60642\) | |
22848.e2 | 22848bu3 | \([0, -1, 0, -3969, -92127]\) | \(52767497666/1753941\) | \(229892554752\) | \([2]\) | \(24576\) | \(0.95300\) | |
22848.e1 | 22848bu4 | \([0, -1, 0, -8769, 318945]\) | \(569001644066/122451\) | \(16049897472\) | \([2]\) | \(24576\) | \(0.95300\) |
Rank
sage: E.rank()
The elliptic curves in class 22848bu have rank \(2\).
Complex multiplication
The elliptic curves in class 22848bu do not have complex multiplication.Modular form 22848.2.a.bu
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.