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In mathematics, the quaternions are a nummer seestem that extends the complex nummers. Thay wur first describit bi Erse mathematician William Rowan Hamilton in 1843[1][2] an applee'd tae mechanics in three-dimensional space. A featur o quaternions is that multiplication o twa quaternions is noncommutative. Hamilton defined a quaternion as the quotient o twa directit lines in a three-dimensional space[3] or equivalently as the quotient o twa vectors.[4]

References[eedit | eedit soorce]

  1. On Quaternions; or on a new System of Imaginaries in Algebra (letter to John T. Graves, dated October 17, 1843). 1843. 
  2. Boris Abramovich Rozenfelʹd (1988). The history of non-euclidean geometry: evolution of the concept of a geometric space. Springer. p. 385. 
  3. Hamilton. Hodges and Smith. 1853. p. 60. 
  4. Hardy 1881 pg. 32. Ginn, Heath, & co. 1881.