https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2465602/
https://www.quantamagazine.org/the-strange-numbers-that-birthed-modern-algebra-20180906/
https://www.quantamagazine.org/the-octonion-math-that-could-underpin-physics-20180720/
https://www.quantamagazine.org/sci-fi-writer-greg-egan-and-anonymous-math-whiz-advance-permutation-problem-20181105/