Properties

Label 402930.ei
Number of curves $2$
Conductor $402930$
CM no
Rank $1$
Graph

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Show commands: SageMath
E = EllipticCurve("ei1")
 
E.isogeny_class()
 

Elliptic curves in class 402930.ei

sage: E.isogeny_class().curves
 
LMFDB label Cremona label Weierstrass coefficients j-invariant Discriminant Torsion structure Modular degree Faltings height Optimality
402930.ei1 402930ei2 \([1, -1, 1, -694442, 222905521]\) \(1062144635427/54760\) \(1909461221525880\) \([2]\) \(4838400\) \(2.0015\) \(\Gamma_0(N)\)-optimal*
402930.ei2 402930ei1 \([1, -1, 1, -41042, 3885841]\) \(-219256227/59200\) \(-2064282401649600\) \([2]\) \(2419200\) \(1.6549\) \(\Gamma_0(N)\)-optimal*
*optimality has not been determined rigorously for conductors over 400000. In this case the optimal curve is certainly one of the 2 curves highlighted, and conditionally curve 402930.ei1.

Rank

sage: E.rank()
 

The elliptic curves in class 402930.ei have rank \(1\).

Complex multiplication

The elliptic curves in class 402930.ei do not have complex multiplication.

Modular form 402930.2.a.ei

sage: E.q_eigenform(10)
 
\(q + q^{2} + q^{4} + q^{5} + q^{8} + q^{10} + 2 q^{13} + q^{16} - 2 q^{17} + 8 q^{19} + O(q^{20})\) 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.