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Lie Groups are Groups that are additionally smooth manifolds such that the multiplication and the inverse maps are smooth.

2 votes
0 answers
544 views

Clebsch–Gordan(CG) coefficients for SO(N) and Sp(N) group

I know how to calculate the CG coefficients for $SU(N)$, but there are other simple Lie group like $SO(N)$ and $Sp(N)$. But up to now I can't find any textbook tells me how to calculate these and I al …
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10 votes
1 answer
726 views

What's the sufficient or necessary conditions for a manifold to have Lie group structure?

For example, given a Lie group, its fundamental group must be Abelian. So $\Sigma_g$ ($g>1$) can't have Lie group structure. We also know for $S^n$ only $n=0,1,3$ can have Lie group structures. I …
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