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SageMath
E = EllipticCurve("fy1")
E.isogeny_class()
Elliptic curves in class 87120fy
sage: E.isogeny_class().curves
LMFDB label | Cremona label | Weierstrass coefficients | j-invariant | Discriminant | Torsion structure | Modular degree | Faltings height | Optimality |
---|---|---|---|---|---|---|---|---|
87120.fp4 | 87120fy1 | \([0, 0, 0, 238128, 164337239]\) | \(72268906496/606436875\) | \(-12531100788527310000\) | \([2]\) | \(1105920\) | \(2.3459\) | \(\Gamma_0(N)\)-optimal |
87120.fp3 | 87120fy2 | \([0, 0, 0, -3437247, 2258565914]\) | \(13584145739344/1195803675\) | \(395351588729596435200\) | \([2]\) | \(2211840\) | \(2.6925\) | |
87120.fp2 | 87120fy3 | \([0, 0, 0, -17011632, 27027819731]\) | \(-26348629355659264/24169921875\) | \(-499434878636718750000\) | \([2]\) | \(3317760\) | \(2.8952\) | |
87120.fp1 | 87120fy4 | \([0, 0, 0, -272246007, 1728981679106]\) | \(6749703004355978704/5671875\) | \(1875211490988000000\) | \([2]\) | \(6635520\) | \(3.2418\) |
Rank
sage: E.rank()
The elliptic curves in class 87120fy have rank \(1\).
Complex multiplication
The elliptic curves in class 87120fy do not have complex multiplication.Modular form 87120.2.a.fy
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 Cremona numbering.
\(\left(\begin{array}{rrrr} 1 & 2 & 3 & 6 \\ 2 & 1 & 6 & 3 \\ 3 & 6 & 1 & 2 \\ 6 & 3 & 2 & 1 \end{array}\right)\)
Isogeny graph
sage: E.isogeny_graph().plot(edge_labels=True)
The vertices are labelled with Cremona labels.