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SageMath
E = EllipticCurve("a1")
E.isogeny_class()
Elliptic curves in class 2304.a
sage: E.isogeny_class().curves
| LMFDB label | Cremona label | Weierstrass coefficients | j-invariant | Discriminant | Torsion structure | Modular degree | Faltings height | Optimality | CM discriminant |
|---|---|---|---|---|---|---|---|---|---|
| 2304.a1 | 2304p2 | \([0, 0, 0, -72, 0]\) | \(1728\) | \(23887872\) | \([2]\) | \(512\) | \(0.10521\) | \(-4\) | |
| 2304.a2 | 2304p1 | \([0, 0, 0, 18, 0]\) | \(1728\) | \(-373248\) | \([2]\) | \(256\) | \(-0.24137\) | \(\Gamma_0(N)\)-optimal | \(-4\) |
Rank
sage: E.rank()
The elliptic curves in class 2304.a have rank \(1\).
Complex multiplication
Each elliptic curve in class 2304.a has complex multiplication by an order in the imaginary quadratic field \(\Q(\sqrt{-1}) \).Modular form 2304.2.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.
\(\left(\begin{array}{rr} 1 & 2 \\ 2 & 1 \end{array}\right)\)
Isogeny graph
sage: E.isogeny_graph().plot(edge_labels=True)
The vertices are labelled with LMFDB labels.
