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SageMath
E = EllipticCurve("i1")
E.isogeny_class()
Elliptic curves in class 31824.i
sage: E.isogeny_class().curves
LMFDB label | Cremona label | Weierstrass coefficients | j-invariant | Discriminant | Torsion structure | Modular degree | Faltings height | Optimality |
---|---|---|---|---|---|---|---|---|
31824.i1 | 31824o4 | \([0, 0, 0, -3771, -84294]\) | \(7944486372/485537\) | \(362451428352\) | \([2]\) | \(32768\) | \(0.97006\) | |
31824.i2 | 31824o2 | \([0, 0, 0, -711, 5670]\) | \(212992848/48841\) | \(9114902784\) | \([2, 2]\) | \(16384\) | \(0.62349\) | |
31824.i3 | 31824o1 | \([0, 0, 0, -666, 6615]\) | \(2800908288/221\) | \(2577744\) | \([2]\) | \(8192\) | \(0.27691\) | \(\Gamma_0(N)\)-optimal |
31824.i4 | 31824o3 | \([0, 0, 0, 1629, 35154]\) | \(640412028/1085773\) | \(-810525201408\) | \([2]\) | \(32768\) | \(0.97006\) |
Rank
sage: E.rank()
The elliptic curves in class 31824.i have rank \(1\).
Complex multiplication
The elliptic curves in class 31824.i do not have complex multiplication.Modular form 31824.2.a.i
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.
\(\left(\begin{array}{rrrr} 1 & 2 & 4 & 4 \\ 2 & 1 & 2 & 2 \\ 4 & 2 & 1 & 4 \\ 4 & 2 & 4 & 1 \end{array}\right)\)
Isogeny graph
sage: E.isogeny_graph().plot(edge_labels=True)
The vertices are labelled with LMFDB labels.