# Gamma matrices

I'm doing a course which assumes knowledge of Group Theory - unfortunately I don't have very much.

Can someone please explain this statement to me (particularly the bits in bold):

"there is only one non-trivial irreducible representation of the Cliford algebra, up to conjugacy"

FYI The Clifford algebra is just the the relationship between gamma matrices:

$$[\gamma_\mu,\gamma_\nu]=2\eta_{\nu\mu}$$

where [..] is the anticommutator rather than the commutator

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Bill_K