The modular curve $X_{67a}$

Curve name $X_{67a}$
Index $48$
Level $8$
Genus $0$
Does the subgroup contain $-I$? No
Generating matrices $ \left[ \begin{matrix} 3 & 6 \\ 2 & 5 \end{matrix}\right], \left[ \begin{matrix} 3 & 6 \\ 2 & 7 \end{matrix}\right], \left[ \begin{matrix} 1 & 2 \\ 2 & 1 \end{matrix}\right]$
Images in lower levels
LevelIndex of imageCorresponding curve
$2$ $6$ $X_{8}$
$4$ $12$ $X_{24}$
Meaning/Special name
Chosen covering $X_{67}$
Curves that $X_{67a}$ minimally covers
Curves that minimally cover $X_{67a}$
Curves that minimally cover $X_{67a}$ and have infinitely many rational points.
Model $\mathbb{P}^{1}$, a universal elliptic curve over an appropriate base is given by \[y^2 = x^3 + A(t)x + B(t), \text{ where}\] \[A(t) = -108t^{8} - 432t^{4} - 1728\] \[B(t) = 432t^{12} + 2592t^{8} - 10368t^{4} - 27648\]
Info about rational points
Comments on finding rational points None
Elliptic curve whose $2$-adic image is the subgroup $y^2 = x^3 - 28x + 48$, with conductor $320$
Generic density of odd order reductions $419/2688$

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