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Learn a bit more about triality of SO

  1. Mar 10, 2010 #1
    I would like to learn a bit more about triality of SO (8) as discussed in this http://en.wikipedia.org/wiki/SO%288%29" [Broken].

    Especially the article says:
    What do they mean by outer automorphism? How does this automorphism connect the three representations? What is meant by vector representation for the Spin(8), has a Spin group not only spinor representations?

    thank you
    Last edited by a moderator: May 4, 2017
  2. jcsd
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