English

The octonionic projective plane

Algebraic Topology 2019-09-17 v1 Geometric Topology

Abstract

This small note, without claim of originality, constructs the projective plane over the octonionic numbers and recalls how this can be used to rule out the existence of higher-dimensional real division algebras, using Adams' solution of the Hopf invariant 11 problem.

Keywords

Cite

@article{arxiv.1909.07047,
  title  = {The octonionic projective plane},
  author = {Malte Lackmann},
  journal= {arXiv preprint arXiv:1909.07047},
  year   = {2019}
}

Comments

9 pages

R2 v1 2026-06-23T11:16:21.336Z