# Mathematical prequisites for really understanding Algebraic and Constructive QFT textbooks.

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I once tried reading John Baez's textbook on Algebraic QFT, but I got stuck on something which I didn't understand maybe because I didn't have a good grasp of Lie Algebras at the time.

I also tried reading Rudolf Haag's textbook but then he started mentioning Several complex variables.

It seems in order to understand texts on Constructive and Algebraic QFT one needs to know at least most if not all of analysis, algebra and topology and geometry.

Is there a shortcut?

:-)

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