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SageMath
E = EllipticCurve("fk1")
E.isogeny_class()
Elliptic curves in class 43200fk
sage: E.isogeny_class().curves
LMFDB label | Cremona label | Weierstrass coefficients | j-invariant | Discriminant | Torsion structure | Modular degree | Faltings height | Optimality | CM discriminant |
---|---|---|---|---|---|---|---|---|---|
43200.eg3 | 43200fk1 | \([0, 0, 0, 0, -250]\) | \(0\) | \(-27000000\) | \([]\) | \(6912\) | \(0.10483\) | \(\Gamma_0(N)\)-optimal | \(-3\) |
43200.eg2 | 43200fk2 | \([0, 0, 0, -3000, -63250]\) | \(-12288000\) | \(-243000000\) | \([]\) | \(20736\) | \(0.65413\) | \(-27\) | |
43200.eg4 | 43200fk3 | \([0, 0, 0, 0, 6750]\) | \(0\) | \(-19683000000\) | \([]\) | \(20736\) | \(0.65413\) | \(-3\) | |
43200.eg1 | 43200fk4 | \([0, 0, 0, -27000, 1707750]\) | \(-12288000\) | \(-177147000000\) | \([]\) | \(62208\) | \(1.2034\) | \(-27\) |
Rank
sage: E.rank()
The elliptic curves in class 43200fk have rank \(0\).
Complex multiplication
Each elliptic curve in class 43200fk has complex multiplication by an order in the imaginary quadratic field \(\Q(\sqrt{-3}) \).Modular form 43200.2.a.fk
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.
\(\left(\begin{array}{rrrr} 1 & 3 & 3 & 9 \\ 3 & 1 & 9 & 27 \\ 3 & 9 & 1 & 3 \\ 9 & 27 & 3 & 1 \end{array}\right)\)
Isogeny graph
sage: E.isogeny_graph().plot(edge_labels=True)
The vertices are labelled with Cremona labels.