Are SU(2) and SO(3) Groups Really Isomorphic?

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2 replies · 2K views

ber70

I have not seen why SU(2) and SO(3) groups are isomorphic?

on Phys.org

D H

They aren't isomorphic. SU(2) is a double cover of SO(3).

mrbohn1

Their Lie algebras are isomorphic, and they are locally isomorphic...but D H is right - they aren't isomorphic!

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