Ciro Santilli OurBigBook.com $£ Sponsor €¥ 中国独裁统治 China Dictatorship 新疆改造中心、六四事件、法轮功、郝海东、709大抓捕、2015巴拿马文件 邓家贵、低端人口、西藏骚乱
Kind of extends the complex numbers.
Some facts that make them stand out:

Ancestors

  1. Cayley-Dickson construction
  2. Complex number
  3. Formalization of mathematics
  4. Area of mathematics
  5. Mathematics
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