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## Main Question or Discussion Point

I'm a physics undergrad and doing some undergrad study on QFT, and I found that Lie algebra is often invoked in texts, so I decide to take a Lie algebra this sem but I've not taken any abstract algebra course before.The first day's class really beats me because the lecturer used many concepts from abstract algebra, as I anticipated. I just want to ask do I need a full knowledge of abstract algebra to learn Lie Algebra, or just some basic concepts?