2009

The Split-Algebras and Non-compact Hopf Maps

Hasebe, Kazuki

Understand

We develop a noncompact version of the Hopf maps based on the split algebras.

  • The split algebras consist of three species: split-complex numbers, split quaternions, and split octonions.
  • They correspond to three noncompact Hopf maps that represent topological maps between hyperboloids in different dimensions with hyperboloid bundle.
  • We realize such noncompact Hopf maps in two ways: one is to utilize the split-imaginary unit, and the other is to utilize the ordinary imaginary unit.

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