NationMaster - Encyclopedia: Spin(8)

In mathematics, SO(8) is the special orthogonal group acting on eight-dimensional Euclidean space. It could be either a real or complex simple Lie group of rank 4 and dimension 28. Like all special orthogonal groups, SO(8) is not simply connected having a fundamental group isomorphic to Z₂. The universal cover of SO(8) is the spinor group Spin(8). The center of Spin(8) is Z₂�Z₂ while the center of SO(8) is Z₂.

Categories: Stub | Lie groups

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SO(8) - Wikipedia, the free encyclopedia (208 words)
	This gives rise to peculiar feature of Spin(8) known as triality.
	Related to this is the fact that the two spinor representations, as well as the fundamental vector representation, of Spin(8) are all eight-dimensional (In all other dimensions the spinor representation is either smaller or larger than the vector representation).
	The triality automorphism of Spin(8) is the outer automorphism group of Spin(8) which is isomorphic to the symmetric group S

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