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SageMath
E = EllipticCurve("j1")
E.isogeny_class()
Elliptic curves in class 9900j
sage: E.isogeny_class().curves
LMFDB label | Cremona label | Weierstrass coefficients | j-invariant | Discriminant | Torsion structure | Modular degree | Faltings height | Optimality |
---|---|---|---|---|---|---|---|---|
9900.p2 | 9900j1 | \([0, 0, 0, -300, -32375]\) | \(-16384/2475\) | \(-451068750000\) | \([2]\) | \(9216\) | \(0.91562\) | \(\Gamma_0(N)\)-optimal |
9900.p1 | 9900j2 | \([0, 0, 0, -17175, -859250]\) | \(192143824/1815\) | \(5292540000000\) | \([2]\) | \(18432\) | \(1.2622\) |
Rank
sage: E.rank()
The elliptic curves in class 9900j have rank \(1\).
Complex multiplication
The elliptic curves in class 9900j do not have complex multiplication.Modular form 9900.2.a.j
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.
\(\left(\begin{array}{rr} 1 & 2 \\ 2 & 1 \end{array}\right)\)
Isogeny graph
sage: E.isogeny_graph().plot(edge_labels=True)
The vertices are labelled with Cremona labels.