Kissing number for $\mathbb{R}^{9}$
The maximum number of non-overlapping unit spheres that can touch a central unit sphere in $\mathbb{R}^{9}$.
Lower bound:
$306$
Upper bound:
$363$
Updates
-
Lower bound: $306$
Reference unknown
[via Kissing number - Wikipedia] -
Upper bound: $363$
Reference unknown
[via Kissing number - Wikipedia]