Properties

Label 20280w
Number of curves $2$
Conductor $20280$
CM no
Rank $1$
Graph

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Show commands: SageMath
E = EllipticCurve("w1")
 
E.isogeny_class()
 

Elliptic curves in class 20280w

sage: E.isogeny_class().curves
 
LMFDB label Cremona label Weierstrass coefficients j-invariant Discriminant Torsion structure Modular degree Faltings height Optimality
20280.w2 20280w1 \([0, 1, 0, -56, 105600]\) \(-4/975\) \(-4819086105600\) \([2]\) \(32256\) \(1.1125\) \(\Gamma_0(N)\)-optimal
20280.w1 20280w2 \([0, 1, 0, -33856, 2349920]\) \(434163602/7605\) \(75177743247360\) \([2]\) \(64512\) \(1.4591\)  

Rank

sage: E.rank()
 

The elliptic curves in class 20280w have rank \(1\).

Complex multiplication

The elliptic curves in class 20280w do not have complex multiplication.

Modular form 20280.2.a.w

sage: E.q_eigenform(10)
 
\(q + q^{3} - q^{5} + 2 q^{7} + q^{9} - q^{15} - 4 q^{17} - 6 q^{19} + O(q^{20})\) 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.

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

Isogeny graph

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

The vertices are labelled with Cremona labels.