Properties

Label 42432i
Number of curves $2$
Conductor $42432$
CM no
Rank $2$
Graph

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Show commands: SageMath
E = EllipticCurve("i1")
 
E.isogeny_class()
 

Elliptic curves in class 42432i

sage: E.isogeny_class().curves
 
LMFDB label Cremona label Weierstrass coefficients j-invariant Discriminant Torsion structure Modular degree Faltings height Optimality
42432.a1 42432i1 \([0, -1, 0, -1385, -4119]\) \(71783828416/39328497\) \(161089523712\) \([2]\) \(73728\) \(0.84115\) \(\Gamma_0(N)\)-optimal
42432.a2 42432i2 \([0, -1, 0, 5375, -37919]\) \(523996494328/320445801\) \(-10500368007168\) \([2]\) \(147456\) \(1.1877\)  

Rank

sage: E.rank()
 

The elliptic curves in class 42432i have rank \(2\).

Complex multiplication

The elliptic curves in class 42432i do not have complex multiplication.

Modular form 42432.2.a.i

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

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

Isogeny graph

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

The vertices are labelled with Cremona labels.