Properties

Label 28224.dn
Number of curves $2$
Conductor $28224$
CM \(\Q(\sqrt{-3}) \)
Rank $1$
Graph

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Show commands: SageMath
sage: E = EllipticCurve("dn1")
 
sage: E.isogeny_class()
 

Elliptic curves in class 28224.dn

sage: E.isogeny_class().curves
 
LMFDB label Cremona label Weierstrass coefficients j-invariant Discriminant Torsion structure Modular degree Faltings height Optimality CM discriminant
28224.dn1 28224dj2 \([0, 0, 0, 0, -6048]\) \(0\) \(-15801827328\) \([]\) \(13824\) \(0.63583\)   \(-3\)
28224.dn2 28224dj1 \([0, 0, 0, 0, 224]\) \(0\) \(-21676032\) \([]\) \(4608\) \(0.086526\) \(\Gamma_0(N)\)-optimal \(-3\)

Rank

sage: E.rank()
 

The elliptic curves in class 28224.dn have rank \(1\).

Complex multiplication

Each elliptic curve in class 28224.dn has complex multiplication by an order in the imaginary quadratic field \(\Q(\sqrt{-3}) \).

Modular form 28224.2.a.dn

sage: E.q_eigenform(10)
 
\(q + 5q^{13} + q^{19} + O(q^{20})\)  Toggle raw display

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.

\(\left(\begin{array}{rr} 1 & 3 \\ 3 & 1 \end{array}\right)\)

Isogeny graph

sage: E.isogeny_graph().plot(edge_labels=True)
 

The vertices are labelled with LMFDB labels.