Properties

Label 18928.n
Number of curves $4$
Conductor $18928$
CM no
Rank $1$
Graph

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Show commands: SageMath
E = EllipticCurve("n1")
 
E.isogeny_class()
 

Elliptic curves in class 18928.n

sage: E.isogeny_class().curves
 
LMFDB label Cremona label Weierstrass coefficients j-invariant Discriminant Torsion structure Modular degree Faltings height Optimality
18928.n1 18928b3 \([0, 0, 0, -50531, -4372030]\) \(1443468546/7\) \(69197133824\) \([2]\) \(36864\) \(1.2804\)  
18928.n2 18928b4 \([0, 0, 0, -9971, 303186]\) \(11090466/2401\) \(23734616901632\) \([2]\) \(36864\) \(1.2804\)  
18928.n3 18928b2 \([0, 0, 0, -3211, -65910]\) \(740772/49\) \(242189968384\) \([2, 2]\) \(18432\) \(0.93387\)  
18928.n4 18928b1 \([0, 0, 0, 169, -4394]\) \(432/7\) \(-8649641728\) \([2]\) \(9216\) \(0.58729\) \(\Gamma_0(N)\)-optimal

Rank

sage: E.rank()
 

The elliptic curves in class 18928.n have rank \(1\).

Complex multiplication

The elliptic curves in class 18928.n do not have complex multiplication.

Modular form 18928.2.a.n

sage: E.q_eigenform(10)
 
\(q - 2 q^{5} - q^{7} - 3 q^{9} - 4 q^{11} - 6 q^{17} + 8 q^{19} + O(q^{20})\) 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.

\(\left(\begin{array}{rrrr} 1 & 4 & 2 & 4 \\ 4 & 1 & 2 & 4 \\ 2 & 2 & 1 & 2 \\ 4 & 4 & 2 & 1 \end{array}\right)\)

Isogeny graph

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

The vertices are labelled with LMFDB labels.