Talk:Euler's four-square identity

Latest comment: 9 years ago by Arthur Rubin in topic Quaternion multiplication

Quaternion multiplication edit

I modified the specific 4-square identity so that it has an all plus term; it now corresponds to the quaternion multiplication  , rather than the former   If someone wants to change it to   I have no objection, but it seems important to me that one term is  Arthur Rubin (talk) 02:45, 2 July 2014 (UTC)Reply