Properties

Label 447174.by
Number of curves $3$
Conductor $447174$
CM no
Rank $0$
Graph

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Show commands: SageMath
E = EllipticCurve("by1")
 
E.isogeny_class()
 

Elliptic curves in class 447174.by

sage: E.isogeny_class().curves
 
LMFDB label Cremona label Weierstrass coefficients j-invariant Discriminant Torsion structure Modular degree Faltings height Optimality
447174.by1 447174by3 \([1, -1, 0, -79163772, 271124988434]\) \(-545407363875/14\) \(-1408348681478298378\) \([]\) \(31912704\) \(2.9986\) \(\Gamma_0(N)\)-optimal*
447174.by2 447174by2 \([1, -1, 0, -908322, 426866012]\) \(-7414875/2744\) \(-30670704618860720232\) \([]\) \(10637568\) \(2.4493\) \(\Gamma_0(N)\)-optimal*
447174.by3 447174by1 \([1, -1, 0, 85398, -5932172]\) \(4492125/3584\) \(-54951571781503488\) \([]\) \(3545856\) \(1.9000\) \(\Gamma_0(N)\)-optimal*
*optimality has not been determined rigorously for conductors over 400000. In this case the optimal curve is certainly one of the 3 curves highlighted, and conditionally curve 447174.by1.

Rank

sage: E.rank()
 

The elliptic curves in class 447174.by have rank \(0\).

Complex multiplication

The elliptic curves in class 447174.by do not have complex multiplication.

Modular form 447174.2.a.by

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

\(\left(\begin{array}{rrr} 1 & 3 & 9 \\ 3 & 1 & 3 \\ 9 & 3 & 1 \end{array}\right)\)

Isogeny graph

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

The vertices are labelled with LMFDB labels.