Properties

Label 1827.a
Number of curves $2$
Conductor $1827$
CM no
Rank $0$
Graph

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Show commands: SageMath
E = EllipticCurve("a1")
 
E.isogeny_class()
 

Elliptic curves in class 1827.a

sage: E.isogeny_class().curves
 
LMFDB label Cremona label Weierstrass coefficients j-invariant Discriminant Torsion structure Modular degree Faltings height Optimality
1827.a1 1827d2 \([1, -1, 1, -1391, -19614]\) \(408023180713/1421\) \(1035909\) \([2]\) \(576\) \(0.37367\)  
1827.a2 1827d1 \([1, -1, 1, -86, -300]\) \(-95443993/5887\) \(-4291623\) \([2]\) \(288\) \(0.027098\) \(\Gamma_0(N)\)-optimal

Rank

sage: E.rank()
 

The elliptic curves in class 1827.a have rank \(0\).

Complex multiplication

The elliptic curves in class 1827.a do not have complex multiplication.

Modular form 1827.2.a.a

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

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

Isogeny graph

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

The vertices are labelled with LMFDB labels.