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SageMath
E = EllipticCurve("bc1")
E.isogeny_class()
Elliptic curves in class 450528bc
sage: E.isogeny_class().curves
LMFDB label | Cremona label | Weierstrass coefficients | j-invariant | Discriminant | Torsion structure | Modular degree | Faltings height | Optimality |
---|---|---|---|---|---|---|---|---|
450528.bc3 | 450528bc1 | \([0, 1, 0, -84594, 9396576]\) | \(22235451328/123201\) | \(370950373445184\) | \([2, 2]\) | \(2322432\) | \(1.6384\) | \(\Gamma_0(N)\)-optimal* |
450528.bc1 | 450528bc2 | \([0, 1, 0, -1351704, 604431432]\) | \(11339065490696/351\) | \(8454709366272\) | \([2]\) | \(4644864\) | \(1.9849\) | \(\Gamma_0(N)\)-optimal* |
450528.bc4 | 450528bc3 | \([0, 1, 0, -37664, 19815036]\) | \(-245314376/6908733\) | \(-166414044456331776\) | \([2]\) | \(4644864\) | \(1.9849\) | |
450528.bc2 | 450528bc4 | \([0, 1, 0, -133329, -2718945]\) | \(1360251712/771147\) | \(148599971821596672\) | \([2]\) | \(4644864\) | \(1.9849\) |
Rank
sage: E.rank()
The elliptic curves in class 450528bc have rank \(1\).
Complex multiplication
The elliptic curves in class 450528bc do not have complex multiplication.Modular form 450528.2.a.bc
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.
\(\left(\begin{array}{rrrr} 1 & 2 & 2 & 2 \\ 2 & 1 & 4 & 4 \\ 2 & 4 & 1 & 4 \\ 2 & 4 & 4 & 1 \end{array}\right)\)
Isogeny graph
sage: E.isogeny_graph().plot(edge_labels=True)
The vertices are labelled with Cremona labels.