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SageMath
E = EllipticCurve("a1")
E.isogeny_class()
Elliptic curves in class 20449.a
sage: E.isogeny_class().curves
LMFDB label | Cremona label | Weierstrass coefficients | j-invariant | Discriminant | Torsion structure | Modular degree | Faltings height | Optimality |
---|---|---|---|---|---|---|---|---|
20449.a1 | 20449g3 | \([0, -1, 1, -159917996, 778437705528]\) | \(-52893159101157376/11\) | \(-94060852367339\) | \([]\) | \(1296000\) | \(2.9781\) | |
20449.a2 | 20449g2 | \([0, -1, 1, -211306, 67787488]\) | \(-122023936/161051\) | \(-1377144939510210299\) | \([]\) | \(259200\) | \(2.1734\) | |
20449.a3 | 20449g1 | \([0, -1, 1, -6816, -512172]\) | \(-4096/11\) | \(-94060852367339\) | \([]\) | \(51840\) | \(1.3687\) | \(\Gamma_0(N)\)-optimal |
Rank
sage: E.rank()
The elliptic curves in class 20449.a have rank \(2\).
Complex multiplication
The elliptic curves in class 20449.a do not have complex multiplication.Modular form 20449.2.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.
\(\left(\begin{array}{rrr} 1 & 5 & 25 \\ 5 & 1 & 5 \\ 25 & 5 & 1 \end{array}\right)\)
Isogeny graph
sage: E.isogeny_graph().plot(edge_labels=True)
The vertices are labelled with LMFDB labels.