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SageMath
E = EllipticCurve("bf1")
E.isogeny_class()
Elliptic curves in class 26520.bf
sage: E.isogeny_class().curves
LMFDB label | Cremona label | Weierstrass coefficients | j-invariant | Discriminant | Torsion structure | Modular degree | Faltings height | Optimality |
---|---|---|---|---|---|---|---|---|
26520.bf1 | 26520bd2 | \([0, 1, 0, -1580, 22800]\) | \(1705021456336/68471325\) | \(17528659200\) | \([2]\) | \(24576\) | \(0.73186\) | |
26520.bf2 | 26520bd1 | \([0, 1, 0, 45, 1350]\) | \(615962624/48481875\) | \(-775710000\) | \([2]\) | \(12288\) | \(0.38529\) | \(\Gamma_0(N)\)-optimal |
Rank
sage: E.rank()
The elliptic curves in class 26520.bf have rank \(1\).
Complex multiplication
The elliptic curves in class 26520.bf do not have complex multiplication.Modular form 26520.2.a.bf
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.
\(\left(\begin{array}{rr} 1 & 2 \\ 2 & 1 \end{array}\right)\)
Isogeny graph
sage: E.isogeny_graph().plot(edge_labels=True)
The vertices are labelled with LMFDB labels.