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SageMath
E = EllipticCurve("by1")
E.isogeny_class()
Elliptic curves in class 112896by
sage: E.isogeny_class().curves
LMFDB label | Cremona label | Weierstrass coefficients | j-invariant | Discriminant | Torsion structure | Modular degree | Faltings height | Optimality |
---|---|---|---|---|---|---|---|---|
112896.o1 | 112896by1 | \([0, 0, 0, -8526, 216776]\) | \(1560896/441\) | \(19365303992832\) | \([2]\) | \(294912\) | \(1.2564\) | \(\Gamma_0(N)\)-optimal |
112896.o2 | 112896by2 | \([0, 0, 0, 22344, 1426880]\) | \(438976/567\) | \(-1593487871410176\) | \([2]\) | \(589824\) | \(1.6030\) |
Rank
sage: E.rank()
The elliptic curves in class 112896by have rank \(1\).
Complex multiplication
The elliptic curves in class 112896by do not have complex multiplication.Modular form 112896.2.a.by
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.
\(\left(\begin{array}{rr} 1 & 2 \\ 2 & 1 \end{array}\right)\)
Isogeny graph
sage: E.isogeny_graph().plot(edge_labels=True)
The vertices are labelled with Cremona labels.