Properties

Label 525a
Number of curves $4$
Conductor $525$
CM no
Rank $1$
Graph

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Show commands: SageMath
E = EllipticCurve("a1")
 
E.isogeny_class()
 

Elliptic curves in class 525a

sage: E.isogeny_class().curves
 
LMFDB label Cremona label Weierstrass coefficients j-invariant Discriminant Torsion structure Modular degree Faltings height Optimality
525.a3 525a1 \([1, 1, 1, -63, 156]\) \(1771561/105\) \(1640625\) \([4]\) \(96\) \(-0.054390\) \(\Gamma_0(N)\)-optimal
525.a2 525a2 \([1, 1, 1, -188, -844]\) \(47045881/11025\) \(172265625\) \([2, 2]\) \(192\) \(0.29218\)  
525.a1 525a3 \([1, 1, 1, -2813, -58594]\) \(157551496201/13125\) \(205078125\) \([2]\) \(384\) \(0.63876\)  
525.a4 525a4 \([1, 1, 1, 437, -4594]\) \(590589719/972405\) \(-15193828125\) \([2]\) \(384\) \(0.63876\)  

Rank

sage: E.rank()
 

The elliptic curves in class 525a have rank \(1\).

Complex multiplication

The elliptic curves in class 525a do not have complex multiplication.

Modular form 525.2.a.a

sage: E.q_eigenform(10)
 
\(q - q^{2} - q^{3} - q^{4} + q^{6} - q^{7} + 3 q^{8} + q^{9} + q^{12} + 6 q^{13} + q^{14} - q^{16} - 2 q^{17} - q^{18} - 8 q^{19} + O(q^{20})\) 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.

\(\left(\begin{array}{rrrr} 1 & 2 & 4 & 4 \\ 2 & 1 & 2 & 2 \\ 4 & 2 & 1 & 4 \\ 4 & 2 & 4 & 1 \end{array}\right)\)

Isogeny graph

sage: E.isogeny_graph().plot(edge_labels=True)
 

The vertices are labelled with Cremona labels.