Properties

Label 31713.h
Number of curves 4
Conductor 31713
CM no
Rank 1
Graph

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Show commands for: SageMath

sage: E = EllipticCurve("31713.h1")
 
sage: E.isogeny_class()
 

Elliptic curves in class 31713.h

sage: E.isogeny_class().curves
 
LMFDB label Cremona label Weierstrass coefficients Torsion structure Modular degree Optimality
31713.h1 31713e4 [1, 0, 1, -140807, -20328541] [2] 172800  
31713.h2 31713e2 [1, 0, 1, -11072, -141775] [2, 2] 86400  
31713.h3 31713e1 [1, 0, 1, -6267, 188809] [2] 43200 \(\Gamma_0(N)\)-optimal
31713.h4 31713e3 [1, 0, 1, 41783, -1093165] [2] 172800  

Rank

sage: E.rank()
 

The elliptic curves in class 31713.h have rank \(1\).

Modular form 31713.2.a.h

sage: E.q_eigenform(10)
 
\( q + q^{2} + q^{3} - q^{4} - 2q^{5} + q^{6} + 4q^{7} - 3q^{8} + q^{9} - 2q^{10} - q^{11} - q^{12} + 2q^{13} + 4q^{14} - 2q^{15} - q^{16} + 2q^{17} + q^{18} + O(q^{20}) \)

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.

\(\left(\begin{array}{rrrr} 1 & 2 & 4 & 4 \\ 2 & 1 & 2 & 2 \\ 4 & 2 & 1 & 4 \\ 4 & 2 & 4 & 1 \end{array}\right)\)

Isogeny graph

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

The vertices are labelled with LMFDB labels.