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# Octonions

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Octonions are an extension to the complex numbers, similar to quaternions. But whereas quaternions are quadruplets of real numbers, octonions are octets; and whereas in quaternions multiplication is not commutative, in octonions it isn't associative either.

The octonions were discovered by [John T. Graves]? in 1843, and independently by [Arthur Cayley]?, who published the first paper on them in 1845. They are sometimes called Cayley numbers.

External links:

- [The Octonions] - an article by [John C. Baez]?

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Last edited August 10, 2001 11:51 pm (diff)
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