## The modular curve $X_{96a}$

Curve name $X_{96a}$
Index $48$
Level $8$
Genus $0$
Does the subgroup contain $-I$? No
Generating matrices $\left[ \begin{matrix} 1 & 2 \\ 0 & 7 \end{matrix}\right], \left[ \begin{matrix} 7 & 6 \\ 0 & 7 \end{matrix}\right], \left[ \begin{matrix} 1 & 2 \\ 0 & 5 \end{matrix}\right], \left[ \begin{matrix} 5 & 2 \\ 0 & 1 \end{matrix}\right]$
Images in lower levels
 Level Index of image Corresponding curve $2$ $6$ $X_{8}$ $4$ $12$ $X_{25}$
Meaning/Special name
Chosen covering $X_{96}$
Curves that $X_{96a}$ minimally covers
Curves that minimally cover $X_{96a}$
Curves that minimally cover $X_{96a}$ and have infinitely many rational points.
Model $\mathbb{P}^{1}$, a universal elliptic curve over an appropriate base is given by $y^2 = x^3 + A(t)x + B(t), \text{ where}$ $A(t) = -108t^{16} + 324t^{12} - 432t^{8} + 324t^{4} - 108$ $B(t) = 432t^{24} - 1944t^{20} + 2592t^{16} - 2592t^{8} + 1944t^{4} - 432$
Elliptic curve whose $2$-adic image is the subgroup $y^2 = x^3 - 790922028x + 8561401455152$, with conductor $486720$
Generic density of odd order reductions $307/2688$