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SageMath
E = EllipticCurve("a1")
E.isogeny_class()
Elliptic curves in class 275.a
sage: E.isogeny_class().curves
LMFDB label | Cremona label | Weierstrass coefficients | j-invariant | Discriminant | Torsion structure | Modular degree | Faltings height | Optimality |
---|---|---|---|---|---|---|---|---|
275.a1 | 275a4 | \([1, -1, 1, -1480, 22272]\) | \(22930509321/6875\) | \(107421875\) | \([2]\) | \(96\) | \(0.51905\) | |
275.a2 | 275a3 | \([1, -1, 1, -730, -7228]\) | \(2749884201/73205\) | \(1143828125\) | \([2]\) | \(96\) | \(0.51905\) | |
275.a3 | 275a2 | \([1, -1, 1, -105, 272]\) | \(8120601/3025\) | \(47265625\) | \([2, 2]\) | \(48\) | \(0.17248\) | |
275.a4 | 275a1 | \([1, -1, 1, 20, 22]\) | \(59319/55\) | \(-859375\) | \([4]\) | \(24\) | \(-0.17409\) | \(\Gamma_0(N)\)-optimal |
Rank
sage: E.rank()
The elliptic curves in class 275.a have rank \(1\).
Complex multiplication
The elliptic curves in class 275.a do not have complex multiplication.Modular form 275.2.a.a
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.
\(\left(\begin{array}{rrrr} 1 & 4 & 2 & 4 \\ 4 & 1 & 2 & 4 \\ 2 & 2 & 1 & 2 \\ 4 & 4 & 2 & 1 \end{array}\right)\)
Isogeny graph
sage: E.isogeny_graph().plot(edge_labels=True)
The vertices are labelled with LMFDB labels.