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SageMath
E = EllipticCurve("e1")
E.isogeny_class()
Elliptic curves in class 405.e
sage: E.isogeny_class().curves
LMFDB label | Cremona label | Weierstrass coefficients | j-invariant | Discriminant | Torsion structure | Modular degree | Faltings height | Optimality |
---|---|---|---|---|---|---|---|---|
405.e1 | 405c2 | \([1, -1, 0, -225, -1250]\) | \(-15590912409/78125\) | \(-6328125\) | \([]\) | \(84\) | \(0.15237\) | |
405.e2 | 405c1 | \([1, -1, 0, 0, 1]\) | \(-9/5\) | \(-405\) | \([]\) | \(12\) | \(-0.82059\) | \(\Gamma_0(N)\)-optimal |
Rank
sage: E.rank()
The elliptic curves in class 405.e have rank \(1\).
Complex multiplication
The elliptic curves in class 405.e do not have complex multiplication.Modular form 405.2.a.e
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.
\(\left(\begin{array}{rr} 1 & 7 \\ 7 & 1 \end{array}\right)\)
Isogeny graph
sage: E.isogeny_graph().plot(edge_labels=True)
The vertices are labelled with LMFDB labels.