Properties

Label 1560c
Number of curves $4$
Conductor $1560$
CM no
Rank $0$
Graph

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Show commands: SageMath
E = EllipticCurve("c1")
 
E.isogeny_class()
 

Elliptic curves in class 1560c

sage: E.isogeny_class().curves
 
LMFDB label Cremona label Weierstrass coefficients j-invariant Discriminant Torsion structure Modular degree Faltings height Optimality
1560.i3 1560c1 \([0, 1, 0, -4876, 129440]\) \(50091484483024/14625\) \(3744000\) \([2]\) \(768\) \(0.62742\) \(\Gamma_0(N)\)-optimal
1560.i2 1560c2 \([0, 1, 0, -4896, 128304]\) \(12677589459076/213890625\) \(219024000000\) \([2, 2]\) \(1536\) \(0.97399\)  
1560.i1 1560c3 \([0, 1, 0, -9896, -183696]\) \(52337949619538/23423590125\) \(47971512576000\) \([2]\) \(3072\) \(1.3206\)  
1560.i4 1560c4 \([0, 1, 0, -216, 367920]\) \(-546718898/28564453125\) \(-58500000000000\) \([2]\) \(3072\) \(1.3206\)  

Rank

sage: E.rank()
 

The elliptic curves in class 1560c have rank \(0\).

Complex multiplication

The elliptic curves in class 1560c do not have complex multiplication.

Modular form 1560.2.a.c

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

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

Isogeny graph

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

The vertices are labelled with Cremona labels.