Elliptic curve isogeny class with Cremona label 485520dq (LMFDB label 485520.dq)

• Label: 485520dq
• Number of curves: $4$
• Conductor: $485520$
• CM: no
• Rank: $1$

Elliptic curves in class 485520dq

LMFDB label	Cremona label	Weierstrass coefficients	j-invariant	Discriminant	Torsion structure	Modular degree	Faltings height	Optimality
485520.dq4	485520dq1	\([0, -1, 0, 2505, 397482]\)	\(4499456/180075\)	\(-69545163802800\)	\([2]\)	\(1179648\)	\(1.3359\)	\(\Gamma_0(N)\)-optimal^*
485520.dq3	485520dq2	\([0, -1, 0, -68300, 6600000]\)	\(5702413264/275625\)	\(1703146868640000\)	\([2, 2]\)	\(2359296\)	\(1.6825\)	\(\Gamma_0(N)\)-optimal^*
485520.dq1	485520dq3	\([0, -1, 0, -1079800, 432239200]\)	\(5633270409316/14175\)	\(350361641548800\)	\([2]\)	\(4718592\)	\(2.0291\)	\(\Gamma_0(N)\)-optimal^*
485520.dq2	485520dq4	\([0, -1, 0, -189680, -23210928]\)	\(30534944836/8203125\)	\(202755579600000000\)	\([2]\)	\(4718592\)	\(2.0291\)

^*optimality has not been determined rigorously for conductors over 400000. In this case the optimal curve is certainly one of the 3 curves highlighted, and conditionally curve 485520dq1.

Rank

The elliptic curves in class 485520dq have rank \(1\).

Complex multiplication

The elliptic curves in class 485520dq do not have complex multiplication.

Modular form 485520.2.a.dq

Isogeny 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.

\(\left(\begin{array}{rrrr} 1 & 2 & 4 & 4 \\ 2 & 1 & 2 & 2 \\ 4 & 2 & 1 & 4 \\ 4 & 2 & 4 & 1 \end{array}\right)\)

Isogeny graph

The vertices are labelled with Cremona labels.