Properties

Label 9408.b
Number of curves $2$
Conductor $9408$
CM no
Rank $1$
Graph

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Show commands for: SageMath
sage: E = EllipticCurve("9408.b1")
 
sage: E.isogeny_class()
 

Elliptic curves in class 9408.b

sage: E.isogeny_class().curves
 
LMFDB label Cremona label Weierstrass coefficients Torsion structure Modular degree Optimality
9408.b1 9408ch2 [0, -1, 0, -431265, 106164801] [2] 172032  
9408.b2 9408ch1 [0, -1, 0, 7775, 5624641] [2] 86016 \(\Gamma_0(N)\)-optimal

Rank

sage: E.rank()
 

The elliptic curves in class 9408.b have rank \(1\).

Modular form 9408.2.a.b

sage: E.q_eigenform(10)
 
\( q - q^{3} - 4q^{5} + q^{9} - 4q^{11} - 4q^{13} + 4q^{15} + 4q^{19} + O(q^{20}) \)

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.