e/Triality

Information
has gloss	eng: In mathematics, triality is a relationship between three vector spaces, analogous to the duality relation between dual vector spaces. Most commonly, it describes those special features of the group Spin(8), the double cover of 8-dimensional rotation group SO(8), arising because the group has an outer automorphism of order three. There is a geometrical version of triality, analogous to duality in projective geometry.
lexicalization	eng: triality
instance of	e/Lie group

Media
media:img	Dynkin diagram D4.png