Properties

Label 2640.c
Number of curves $2$
Conductor $2640$
CM no
Rank $1$
Graph

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Show commands: SageMath
E = EllipticCurve("c1")
 
E.isogeny_class()
 

Elliptic curves in class 2640.c

sage: E.isogeny_class().curves
 
LMFDB label Cremona label Weierstrass coefficients j-invariant Discriminant Torsion structure Modular degree Faltings height Optimality
2640.c1 2640a2 \([0, -1, 0, -1716, -17424]\) \(2184181167184/717482205\) \(183675444480\) \([2]\) \(3072\) \(0.86438\)  
2640.c2 2640a1 \([0, -1, 0, 309, -2034]\) \(203269830656/218317275\) \(-3493076400\) \([2]\) \(1536\) \(0.51781\) \(\Gamma_0(N)\)-optimal

Rank

sage: E.rank()
 

The elliptic curves in class 2640.c have rank \(1\).

Complex multiplication

The elliptic curves in class 2640.c do not have complex multiplication.

Modular form 2640.2.a.c

sage: E.q_eigenform(10)
 
\(q - q^{3} - q^{5} + 2 q^{7} + q^{9} - q^{11} + q^{15} - 8 q^{17} + 8 q^{19} + O(q^{20})\) 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 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.