Properties

Label 20328.y
Number of curves $2$
Conductor $20328$
CM no
Rank $1$
Graph

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Show commands: SageMath
E = EllipticCurve("y1")
 
E.isogeny_class()
 

Elliptic curves in class 20328.y

sage: E.isogeny_class().curves
 
LMFDB label Cremona label Weierstrass coefficients j-invariant Discriminant Torsion structure Modular degree Faltings height Optimality
20328.y1 20328u2 \([0, 1, 0, -47472, -3320352]\) \(2450086/441\) \(2129622900185088\) \([2]\) \(84480\) \(1.6603\)  
20328.y2 20328u1 \([0, 1, 0, 5768, -296320]\) \(8788/21\) \(-50705307147264\) \([2]\) \(42240\) \(1.3137\) \(\Gamma_0(N)\)-optimal

Rank

sage: E.rank()
 

The elliptic curves in class 20328.y have rank \(1\).

Complex multiplication

The elliptic curves in class 20328.y do not have complex multiplication.

Modular form 20328.2.a.y

sage: E.q_eigenform(10)
 
\(q + q^{3} + 2 q^{5} - q^{7} + q^{9} + 2 q^{13} + 2 q^{15} + 4 q^{17} - 4 q^{19} + O(q^{20})\) 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.

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

Isogeny graph

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

The vertices are labelled with LMFDB labels.