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Linear representations of algebras and groups, Lie theory, associative algebras, multilinear algebra.

7 votes
1 answer
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Faithful representation of the projective unitary group with the lowest dimension?

What is the lowest dimension of a faithful ordinary representation (as compared with projective representation) of the projective unitary group $\rm{PU}(d)$? Is it $d^2-1$?
Huangjun Zhu's user avatar