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SageMath
E = EllipticCurve("bn1")
E.isogeny_class()
Elliptic curves in class 25200bn
sage: E.isogeny_class().curves
LMFDB label | Cremona label | Weierstrass coefficients | j-invariant | Discriminant | Torsion structure | Modular degree | Faltings height | Optimality |
---|---|---|---|---|---|---|---|---|
25200.ed4 | 25200bn1 | \([0, 0, 0, -1650, 167375]\) | \(-2725888/64827\) | \(-11814720750000\) | \([2]\) | \(49152\) | \(1.1891\) | \(\Gamma_0(N)\)-optimal |
25200.ed3 | 25200bn2 | \([0, 0, 0, -56775, 5183750]\) | \(6940769488/35721\) | \(104162436000000\) | \([2, 2]\) | \(98304\) | \(1.5356\) | |
25200.ed2 | 25200bn3 | \([0, 0, 0, -88275, -1210750]\) | \(6522128932/3720087\) | \(43391094768000000\) | \([2]\) | \(196608\) | \(1.8822\) | |
25200.ed1 | 25200bn4 | \([0, 0, 0, -907275, 332626250]\) | \(7080974546692/189\) | \(2204496000000\) | \([2]\) | \(196608\) | \(1.8822\) |
Rank
sage: E.rank()
The elliptic curves in class 25200bn have rank \(1\).
Complex multiplication
The elliptic curves in class 25200bn do not have complex multiplication.Modular form 25200.2.a.bn
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 Cremona numbering.
\(\left(\begin{array}{rrrr} 1 & 2 & 4 & 4 \\ 2 & 1 & 2 & 2 \\ 4 & 2 & 1 & 4 \\ 4 & 2 & 4 & 1 \end{array}\right)\)
Isogeny graph
sage: E.isogeny_graph().plot(edge_labels=True)
The vertices are labelled with Cremona labels.