My question is how to construct the Dynkin diagrams of a semi-simple Lie group $G$, which is the product of simple Lie groups. Is it the combinaison of Dynkin diagrams of these simple Lie groups? For example, what would the Dynkin diagram of $SU(2)\times SU(2)\times SU(2)$ look like?
2026-05-05 20:26:46.1778012806
Dynkin diagram construction
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