Properties

Label 18480.i
Number of curves $2$
Conductor $18480$
CM no
Rank $1$
Graph

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Show commands: SageMath
E = EllipticCurve("i1")
 
E.isogeny_class()
 

Elliptic curves in class 18480.i

sage: E.isogeny_class().curves
 
LMFDB label Cremona label Weierstrass coefficients j-invariant Discriminant Torsion structure Modular degree Faltings height Optimality
18480.i1 18480bq2 \([0, -1, 0, -13461, 605661]\) \(-65860951343104/3493875\) \(-14310912000\) \([]\) \(31104\) \(1.0165\)  
18480.i2 18480bq1 \([0, -1, 0, -21, 2205]\) \(-262144/509355\) \(-2086318080\) \([]\) \(10368\) \(0.46719\) \(\Gamma_0(N)\)-optimal

Rank

sage: E.rank()
 

The elliptic curves in class 18480.i have rank \(1\).

Complex multiplication

The elliptic curves in class 18480.i do not have complex multiplication.

Modular form 18480.2.a.i

sage: E.q_eigenform(10)
 
\(q - q^{3} - q^{5} - q^{7} + q^{9} + q^{11} - 4 q^{13} + q^{15} + 3 q^{17} + q^{19} + O(q^{20})\) 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.

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

Isogeny graph

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

The vertices are labelled with LMFDB labels.