Show commands:
SageMath
E = EllipticCurve("a1")
E.isogeny_class()
Elliptic curves in class 187.a
sage: E.isogeny_class().curves
LMFDB label | Cremona label | Weierstrass coefficients | j-invariant | Discriminant | Torsion structure | Modular degree | Faltings height | Optimality |
---|---|---|---|---|---|---|---|---|
187.a1 | 187a2 | \([0, 1, 1, -99, -905]\) | \(-108394872832/265513259\) | \(-265513259\) | \([]\) | \(48\) | \(0.30445\) | |
187.a2 | 187a1 | \([0, 1, 1, 11, 30]\) | \(134217728/384659\) | \(-384659\) | \([3]\) | \(16\) | \(-0.24486\) | \(\Gamma_0(N)\)-optimal |
Rank
sage: E.rank()
The elliptic curves in class 187.a have rank \(0\).
Complex multiplication
The elliptic curves in class 187.a do not have complex multiplication.Modular form 187.2.a.a
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.
\(\left(\begin{array}{rr} 1 & 3 \\ 3 & 1 \end{array}\right)\)
Isogeny graph
sage: E.isogeny_graph().plot(edge_labels=True)
The vertices are labelled with LMFDB labels.