Properties

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

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Show commands: SageMath
E = EllipticCurve("bg1")
 
E.isogeny_class()
 

Elliptic curves in class 402930bg

sage: E.isogeny_class().curves
 
LMFDB label Cremona label Weierstrass coefficients j-invariant Discriminant Torsion structure Modular degree Faltings height Optimality
402930.bg2 402930bg1 \([1, -1, 0, -68085, 5460021]\) \(27027009001/5730560\) \(7400834684432640\) \([2]\) \(2580480\) \(1.7595\) \(\Gamma_0(N)\)-optimal*
402930.bg1 402930bg2 \([1, -1, 0, -1026405, 400479525]\) \(92596929932521/6023600\) \(7779286458068400\) \([2]\) \(5160960\) \(2.1061\) \(\Gamma_0(N)\)-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 402930bg1.

Rank

sage: E.rank()
 

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

Complex multiplication

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

Modular form 402930.2.a.bg

sage: E.q_eigenform(10)
 
\(q - q^{2} + q^{4} - q^{5} + 4 q^{7} - q^{8} + q^{10} + 2 q^{13} - 4 q^{14} + q^{16} - 2 q^{17} + O(q^{20})\) 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.

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

Isogeny graph

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

The vertices are labelled with Cremona labels.