Properties

Label 2142b
Number of curves $2$
Conductor $2142$
CM no
Rank $0$
Graph

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Show commands: SageMath
E = EllipticCurve("b1")
 
E.isogeny_class()
 

Elliptic curves in class 2142b

sage: E.isogeny_class().curves
 
LMFDB label Cremona label Weierstrass coefficients j-invariant Discriminant Torsion structure Modular degree Faltings height Optimality
2142.j1 2142b1 \([1, -1, 0, -168, 882]\) \(-19486825371/11662\) \(-314874\) \([3]\) \(480\) \(-0.00098777\) \(\Gamma_0(N)\)-optimal
2142.j2 2142b2 \([1, -1, 0, 147, 3437]\) \(17779581/275128\) \(-5415344424\) \([]\) \(1440\) \(0.54832\)  

Rank

sage: E.rank()
 

The elliptic curves in class 2142b have rank \(0\).

Complex multiplication

The elliptic curves in class 2142b do not have complex multiplication.

Modular form 2142.2.a.b

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

\(\left(\begin{array}{rr} 1 & 3 \\ 3 & 1 \end{array}\right)\)

Isogeny graph

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

The vertices are labelled with Cremona labels.