Properties

Label 210.a
Number of curves $4$
Conductor $210$
CM no
Rank $1$
Graph

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

Elliptic curves in class 210.a

sage: E.isogeny_class().curves
 
LMFDB label Cremona label Weierstrass coefficients j-invariant Discriminant Torsion structure Modular degree Faltings height Optimality
210.a1 210d3 \([1, 1, 0, -373, 2623]\) \(5763259856089/5670\) \(5670\) \([2]\) \(64\) \(0.013583\)  
210.a2 210d2 \([1, 1, 0, -23, 33]\) \(1439069689/44100\) \(44100\) \([2, 2]\) \(32\) \(-0.33299\)  
210.a3 210d1 \([1, 1, 0, -3, -3]\) \(4826809/1680\) \(1680\) \([2]\) \(16\) \(-0.67956\) \(\Gamma_0(N)\)-optimal
210.a4 210d4 \([1, 1, 0, 7, 147]\) \(30080231/9003750\) \(-9003750\) \([2]\) \(64\) \(0.013583\)  

Rank

sage: E.rank()
 

The elliptic curves in class 210.a have rank \(1\).

Complex multiplication

The elliptic curves in class 210.a do not have complex multiplication.

Modular form 210.2.a.a

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

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

Isogeny graph

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

The vertices are labelled with LMFDB labels.