Show commands:
SageMath
E = EllipticCurve("x1")
E.isogeny_class()
Elliptic curves in class 74529x
sage: E.isogeny_class().curves
LMFDB label | Cremona label | Weierstrass coefficients | j-invariant | Discriminant | Torsion structure | Modular degree | Faltings height | Optimality | CM discriminant |
---|---|---|---|---|---|---|---|---|---|
74529.bj4 | 74529x1 | \([1, -1, 0, -3327, 91664]\) | \(-3375\) | \(-1206929110023\) | \([2]\) | \(75264\) | \(1.0326\) | \(\Gamma_0(N)\)-optimal | \(-7\) |
74529.bj3 | 74529x2 | \([1, -1, 0, -56562, 5191577]\) | \(16581375\) | \(1206929110023\) | \([2]\) | \(150528\) | \(1.3792\) | \(-28\) | |
74529.bj2 | 74529x3 | \([1, -1, 0, -163032, -31114693]\) | \(-3375\) | \(-141994002865095927\) | \([2]\) | \(526848\) | \(2.0056\) | \(-7\) | |
74529.bj1 | 74529x4 | \([1, -1, 0, -2771547, -1775167822]\) | \(16581375\) | \(141994002865095927\) | \([2]\) | \(1053696\) | \(2.3522\) | \(-28\) |
Rank
sage: E.rank()
The elliptic curves in class 74529x have rank \(1\).
Complex multiplication
Each elliptic curve in class 74529x has complex multiplication by an order in the imaginary quadratic field \(\Q(\sqrt{-7}) \).Modular form 74529.2.a.x
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.
\(\left(\begin{array}{rrrr} 1 & 2 & 7 & 14 \\ 2 & 1 & 14 & 7 \\ 7 & 14 & 1 & 2 \\ 14 & 7 & 2 & 1 \end{array}\right)\)
Isogeny graph
sage: E.isogeny_graph().plot(edge_labels=True)
The vertices are labelled with Cremona labels.