Properties

Label 21294.k
Number of curves $4$
Conductor $21294$
CM no
Rank $1$
Graph

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Show commands: SageMath
E = EllipticCurve("k1")
 
E.isogeny_class()
 

Elliptic curves in class 21294.k

sage: E.isogeny_class().curves
 
LMFDB label Cremona label Weierstrass coefficients j-invariant Discriminant Torsion structure Modular degree Faltings height Optimality
21294.k1 21294bi4 \([1, -1, 0, -2975868, -1974774060]\) \(828279937799497/193444524\) \(680681711924614764\) \([2]\) \(516096\) \(2.4124\)  
21294.k2 21294bi2 \([1, -1, 0, -207648, -23178960]\) \(281397674377/96589584\) \(339873996077585424\) \([2, 2]\) \(258048\) \(2.0658\)  
21294.k3 21294bi1 \([1, -1, 0, -85968, 9455616]\) \(19968681097/628992\) \(2213261675718912\) \([2]\) \(129024\) \(1.7193\) \(\Gamma_0(N)\)-optimal
21294.k4 21294bi3 \([1, -1, 0, 613692, -161656884]\) \(7264187703863/7406095788\) \(-26060153347393378668\) \([2]\) \(516096\) \(2.4124\)  

Rank

sage: E.rank()
 

The elliptic curves in class 21294.k have rank \(1\).

Complex multiplication

The elliptic curves in class 21294.k do not have complex multiplication.

Modular form 21294.2.a.k

sage: E.q_eigenform(10)
 
\(q - q^{2} + q^{4} - 2 q^{5} + q^{7} - q^{8} + 2 q^{10} - 4 q^{11} - q^{14} + q^{16} + 2 q^{17} + 4 q^{19} + O(q^{20})\) 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 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.