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SageMath
E = EllipticCurve("b1")
E.isogeny_class()
Elliptic curves in class 50400.b
sage: E.isogeny_class().curves
LMFDB label | Cremona label | Weierstrass coefficients | j-invariant | Discriminant | Torsion structure | Modular degree | Faltings height | Optimality |
---|---|---|---|---|---|---|---|---|
50400.b1 | 50400dk1 | \([0, 0, 0, -308325, 65896000]\) | \(4446542056384/25725\) | \(18753525000000\) | \([2]\) | \(368640\) | \(1.7372\) | \(\Gamma_0(N)\)-optimal |
50400.b2 | 50400dk2 | \([0, 0, 0, -302700, 68416000]\) | \(-65743598656/5294205\) | \(-247006428480000000\) | \([2]\) | \(737280\) | \(2.0838\) |
Rank
sage: E.rank()
The elliptic curves in class 50400.b have rank \(1\).
Complex multiplication
The elliptic curves in class 50400.b do not have complex multiplication.Modular form 50400.2.a.b
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.
\(\left(\begin{array}{rr} 1 & 2 \\ 2 & 1 \end{array}\right)\)
Isogeny graph
sage: E.isogeny_graph().plot(edge_labels=True)
The vertices are labelled with LMFDB labels.