Properties

Label 74529x
Number of curves $4$
Conductor $74529$
CM \(\Q(\sqrt{-7}) \)
Rank $1$
Graph

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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)
 
\(q + q^{2} - q^{4} - 3 q^{8} + 4 q^{11} - q^{16} + O(q^{20})\) Copy content Toggle raw display

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.