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## Main Question or Discussion Point

Hello,

Near the end of undergraduate physics, we are often told about the difficulty of quantizing the gravitational field and the absurdities that arise from it. However, I've yet to see a mathematical demonstration of where the incompatibilities of QFT and GR arise. Does anybody know where I can find some mathematics behind these claims or could anyone demonstrate it?

Near the end of undergraduate physics, we are often told about the difficulty of quantizing the gravitational field and the absurdities that arise from it. However, I've yet to see a mathematical demonstration of where the incompatibilities of QFT and GR arise. Does anybody know where I can find some mathematics behind these claims or could anyone demonstrate it?