Properties

Label 12240.bj
Number of curves $2$
Conductor $12240$
CM no
Rank $1$
Graph

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Show commands: SageMath
E = EllipticCurve("bj1")
 
E.isogeny_class()
 

Elliptic curves in class 12240.bj

sage: E.isogeny_class().curves
 
LMFDB label Cremona label Weierstrass coefficients j-invariant Discriminant Torsion structure Modular degree Faltings height Optimality
12240.bj1 12240cg2 \([0, 0, 0, -956307, -371557294]\) \(-32391289681150609/1228250000000\) \(-3667534848000000000\) \([]\) \(181440\) \(2.3322\)  
12240.bj2 12240cg1 \([0, 0, 0, 57453, -1645486]\) \(7023836099951/4456448000\) \(-13306882424832000\) \([]\) \(60480\) \(1.7829\) \(\Gamma_0(N)\)-optimal

Rank

sage: E.rank()
 

The elliptic curves in class 12240.bj have rank \(1\).

Complex multiplication

The elliptic curves in class 12240.bj do not have complex multiplication.

Modular form 12240.2.a.bj

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

\(\left(\begin{array}{rr} 1 & 3 \\ 3 & 1 \end{array}\right)\)

Isogeny graph

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

The vertices are labelled with LMFDB labels.