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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* |
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)
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.