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SageMath
E = EllipticCurve("ch1")
E.isogeny_class()
Elliptic curves in class 25200.ch
sage: E.isogeny_class().curves
LMFDB label | Cremona label | Weierstrass coefficients | j-invariant | Discriminant | Torsion structure | Modular degree | Faltings height | Optimality |
---|---|---|---|---|---|---|---|---|
25200.ch1 | 25200dw2 | \([0, 0, 0, -8175, -283750]\) | \(20720464/63\) | \(183708000000\) | \([2]\) | \(30720\) | \(1.0300\) | |
25200.ch2 | 25200dw1 | \([0, 0, 0, -300, -8125]\) | \(-16384/147\) | \(-26790750000\) | \([2]\) | \(15360\) | \(0.68347\) | \(\Gamma_0(N)\)-optimal |
Rank
sage: E.rank()
The elliptic curves in class 25200.ch have rank \(1\).
Complex multiplication
The elliptic curves in class 25200.ch do not have complex multiplication.Modular form 25200.2.a.ch
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.