Properties

Label 186.c
Number of curves $2$
Conductor $186$
CM no
Rank $0$
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Show commands: SageMath
E = EllipticCurve("c1")
 
E.isogeny_class()
 

Elliptic curves in class 186.c

sage: E.isogeny_class().curves
 
LMFDB label Cremona label Weierstrass coefficients j-invariant Discriminant Torsion structure Modular degree Faltings height Optimality
186.c1 186b2 \([1, 0, 0, -1395, -20181]\) \(-300238092661681/171774906\) \(-171774906\) \([]\) \(100\) \(0.52634\)  
186.c2 186b1 \([1, 0, 0, 15, 9]\) \(371694959/241056\) \(-241056\) \([5]\) \(20\) \(-0.27838\) \(\Gamma_0(N)\)-optimal

Rank

sage: E.rank()
 

The elliptic curves in class 186.c have rank \(0\).

Complex multiplication

The elliptic curves in class 186.c do not have complex multiplication.

Modular form 186.2.a.c

sage: E.q_eigenform(10)
 
\(q + q^{2} + q^{3} + q^{4} + q^{5} + q^{6} - 2 q^{7} + q^{8} + q^{9} + q^{10} - 3 q^{11} + q^{12} - q^{13} - 2 q^{14} + q^{15} + q^{16} + 3 q^{17} + q^{18} - 5 q^{19} + O(q^{20})\) 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.

\(\left(\begin{array}{rr} 1 & 5 \\ 5 & 1 \end{array}\right)\)

Isogeny graph

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

The vertices are labelled with LMFDB labels.