Properties

Label 55440a
Number of curves $2$
Conductor $55440$
CM no
Rank $1$
Graph

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Show commands: SageMath
E = EllipticCurve("a1")
 
E.isogeny_class()
 

Elliptic curves in class 55440a

sage: E.isogeny_class().curves
 
LMFDB label Cremona label Weierstrass coefficients j-invariant Discriminant Torsion structure Modular degree Faltings height Optimality
55440.g2 55440a1 \([0, 0, 0, -12423, -544122]\) \(-30676050095472/751953125\) \(-5197500000000\) \([2]\) \(81920\) \(1.2251\) \(\Gamma_0(N)\)-optimal
55440.g1 55440a2 \([0, 0, 0, -199923, -34406622]\) \(31963054227773868/18528125\) \(512265600000\) \([2]\) \(163840\) \(1.5717\)  

Rank

sage: E.rank()
 

The elliptic curves in class 55440a have rank \(1\).

Complex multiplication

The elliptic curves in class 55440a do not have complex multiplication.

Modular form 55440.2.a.a

sage: E.q_eigenform(10)
 
\(q - q^{5} - q^{7} - q^{11} - 2 q^{13} - 2 q^{17} + O(q^{20})\) 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.