Properties

Label 19890.e
Number of curves $2$
Conductor $19890$
CM no
Rank $1$
Graph

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Show commands: SageMath
E = EllipticCurve("e1")
 
E.isogeny_class()
 

Elliptic curves in class 19890.e

sage: E.isogeny_class().curves
 
LMFDB label Cremona label Weierstrass coefficients j-invariant Discriminant Torsion structure Modular degree Faltings height Optimality
19890.e1 19890e1 \([1, -1, 0, -122580, -16299824]\) \(279419703685750081/3666124800000\) \(2672604979200000\) \([2]\) \(122880\) \(1.7678\) \(\Gamma_0(N)\)-optimal
19890.e2 19890e2 \([1, -1, 0, -18900, -43070000]\) \(-1024222994222401/1098922500000000\) \(-801114502500000000\) \([2]\) \(245760\) \(2.1144\)  

Rank

sage: E.rank()
 

The elliptic curves in class 19890.e have rank \(1\).

Complex multiplication

The elliptic curves in class 19890.e do not have complex multiplication.

Modular form 19890.2.a.e

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

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

Isogeny graph

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

The vertices are labelled with LMFDB labels.