enow.com Web Search

Search results

  1. Results from the WOW.Com Content Network
  2. Quaternion - Wikipedia

    en.wikipedia.org/wiki/Quaternion

    Quaternions were introduced by Hamilton in 1843. [9] Important precursors to this work included Euler's four-square identity (1748) and Olinde Rodrigues' parameterization of general rotations by four parameters (1840), but neither of these writers treated the four-parameter rotations as an algebra.