quaternionic projective line$\,\mathbb{H}P^1$
The n-sphere for $n = 8$.
There is a homeomorphism
between the octonionic projective line and the 8-sphere.
There is a unique exotic smooth structure on the 8-sphere.
Last revised on December 3, 2021 at 14:12:16. See the history of this page for a list of all contributions to it.