Properties

Label 397800dy
Number of curves $4$
Conductor $397800$
CM no
Rank $0$
Graph

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Show commands: SageMath
E = EllipticCurve("dy1")
 
E.isogeny_class()
 

Elliptic curves in class 397800dy

sage: E.isogeny_class().curves
 
LMFDB label Cremona label Weierstrass coefficients j-invariant Discriminant Torsion structure Modular degree Faltings height Optimality
397800.dy3 397800dy1 \([0, 0, 0, -100650, -10674875]\) \(618724784128/87947613\) \(16028452469250000\) \([2]\) \(2621440\) \(1.8352\) \(\Gamma_0(N)\)-optimal
397800.dy2 397800dy2 \([0, 0, 0, -425775, 96291250]\) \(2927363579728/320445801\) \(934419955716000000\) \([2, 2]\) \(5242880\) \(2.1818\)  
397800.dy1 397800dy3 \([0, 0, 0, -6622275, 6559240750]\) \(2753580869496292/39328497\) \(458727589008000000\) \([2]\) \(10485760\) \(2.5284\)  
397800.dy4 397800dy4 \([0, 0, 0, 568725, 479173750]\) \(1744147297148/9513325341\) \(-110963426777424000000\) \([2]\) \(10485760\) \(2.5284\)  

Rank

sage: E.rank()
 

The elliptic curves in class 397800dy have rank \(0\).

Complex multiplication

The elliptic curves in class 397800dy do not have complex multiplication.

Modular form 397800.2.a.dy

sage: E.q_eigenform(10)
 
\(q + 4 q^{7} - q^{13} + q^{17} + 4 q^{19} + O(q^{20})\) 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 Cremona 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 Cremona labels.