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    Graduate Tensor products of representations

    I'm a mathematician, and I have trouble understanding the physics notation. I'm glad if someone could help me out. Here's my question: Let g be a Lie algebra and r_1: g -> End(V_1), r_2: g -> End(V_2) be two representations. Then there is a representation r3:=r_1 \otimes r_2: g -> End...