Properties

Label 129600.cd
Number of curves $4$
Conductor $129600$
CM no
Rank $2$
Graph

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Show commands: SageMath
E = EllipticCurve("cd1")
 
E.isogeny_class()
 

Elliptic curves in class 129600.cd

sage: E.isogeny_class().curves
 
LMFDB label Cremona label Weierstrass coefficients j-invariant Discriminant Torsion structure Modular degree Faltings height Optimality
129600.cd1 129600ef3 \([0, 0, 0, -1723500, 870894000]\) \(-189613868625/128\) \(-382205952000000\) \([]\) \(1161216\) \(2.1138\)  
129600.cd2 129600ef4 \([0, 0, 0, -1363500, 1244862000]\) \(-1159088625/2097152\) \(-507227047723008000000\) \([]\) \(3483648\) \(2.6631\)  
129600.cd3 129600ef2 \([0, 0, 0, -67500, -7074000]\) \(-140625/8\) \(-1934917632000000\) \([]\) \(497664\) \(1.6902\)  
129600.cd4 129600ef1 \([0, 0, 0, 4500, -18000]\) \(3375/2\) \(-5971968000000\) \([]\) \(165888\) \(1.1409\) \(\Gamma_0(N)\)-optimal

Rank

sage: E.rank()
 

The elliptic curves in class 129600.cd have rank \(2\).

Complex multiplication

The elliptic curves in class 129600.cd do not have complex multiplication.

Modular form 129600.2.a.cd

sage: E.q_eigenform(10)
 
\(q - 2 q^{7} - 3 q^{11} + 2 q^{13} - 3 q^{17} + q^{19} + O(q^{20})\) 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.

\(\left(\begin{array}{rrrr} 1 & 3 & 21 & 7 \\ 3 & 1 & 7 & 21 \\ 21 & 7 & 1 & 3 \\ 7 & 21 & 3 & 1 \end{array}\right)\)

Isogeny graph

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

The vertices are labelled with LMFDB labels.