Properties

Label 402930.bf
Number of curves $4$
Conductor $402930$
CM no
Rank $0$
Graph

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Show commands: SageMath
E = EllipticCurve("bf1")
 
E.isogeny_class()
 

Elliptic curves in class 402930.bf

sage: E.isogeny_class().curves
 
LMFDB label Cremona label Weierstrass coefficients j-invariant Discriminant Torsion structure Modular degree Faltings height Optimality
402930.bf1 402930bf4 \([1, -1, 0, -11420910, -6628519980]\) \(127568139540190201/59114336463360\) \(76344272051118182115840\) \([2]\) \(52254720\) \(3.0854\)  
402930.bf2 402930bf2 \([1, -1, 0, -5785335, 5357171925]\) \(16581570075765001/998001000\) \(1288886324529969000\) \([2]\) \(17418240\) \(2.5361\) \(\Gamma_0(N)\)-optimal*
402930.bf3 402930bf1 \([1, -1, 0, -340335, 94034925]\) \(-3375675045001/999000000\) \(-1290176501031000000\) \([2]\) \(8709120\) \(2.1895\) \(\Gamma_0(N)\)-optimal*
402930.bf4 402930bf3 \([1, -1, 0, 2518290, -782419500]\) \(1367594037332999/995878502400\) \(-1286145186865289625600\) \([2]\) \(26127360\) \(2.7388\)  
*optimality has not been determined rigorously for conductors over 400000. In this case the optimal curve is certainly one of the 0 curves highlighted, and conditionally curve 402930.bf1.

Rank

sage: E.rank()
 

The elliptic curves in class 402930.bf have rank \(0\).

Complex multiplication

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

Modular form 402930.2.a.bf

sage: E.q_eigenform(10)
 
\(q - q^{2} + q^{4} - q^{5} + 4 q^{7} - q^{8} + q^{10} - 2 q^{13} - 4 q^{14} + q^{16} - 6 q^{17} - 2 q^{19} + O(q^{20})\) 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.

\(\left(\begin{array}{rrrr} 1 & 3 & 6 & 2 \\ 3 & 1 & 2 & 6 \\ 6 & 2 & 1 & 3 \\ 2 & 6 & 3 & 1 \end{array}\right)\)

Isogeny graph

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

The vertices are labelled with LMFDB labels.