Properties

Label 2646.r
Number of curves $2$
Conductor $2646$
CM no
Rank $0$
Graph

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Show commands: SageMath
E = EllipticCurve("r1")
 
E.isogeny_class()
 

Elliptic curves in class 2646.r

sage: E.isogeny_class().curves
 
LMFDB label Cremona label Weierstrass coefficients j-invariant Discriminant Torsion structure Modular degree Faltings height Optimality
2646.r1 2646bc2 \([1, -1, 1, -104, -381]\) \(-10353819/8\) \(-95256\) \([]\) \(540\) \(-0.11291\)  
2646.r2 2646bc1 \([1, -1, 1, 1, -3]\) \(189/2\) \(-2646\) \([]\) \(180\) \(-0.66222\) \(\Gamma_0(N)\)-optimal

Rank

sage: E.rank()
 

The elliptic curves in class 2646.r have rank \(0\).

Complex multiplication

The elliptic curves in class 2646.r do not have complex multiplication.

Modular form 2646.2.a.r

sage: E.q_eigenform(10)
 
\(q + q^{2} + q^{4} - 3 q^{5} + q^{8} - 3 q^{10} + 4 q^{13} + q^{16} - 6 q^{17} + 4 q^{19} + O(q^{20})\) 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.

\(\left(\begin{array}{rr} 1 & 3 \\ 3 & 1 \end{array}\right)\)

Isogeny graph

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

The vertices are labelled with LMFDB labels.