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Topological quantum field theory
Field of study
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In gauge theory and mathematical physics, a topological quantum field theory is a quantum field theory which computes topological invariants.
Wikipedia
![PDF] Unoriented topological quantum field theory and link homology ...](/imgres?imgurl=https://d3i71xaburhd42.cloudfront.net/31ecfba082bca967fca28f9555b0fbd328610bc9/18-Figure4-1.png&imgrefurl=https://www.semanticscholar.org/paper/Unoriented-topological-quantum-field-theory-and-Turaev-Turner/4c4510583e545313a7ae811e61cb25b29e0f6d0b&h=512&w=882&tbnid=Hm9V4zA1r7DVCM&q=Topological+quantum+field+theory&tbnh=85&tbnw=146&usg=AI4_-kSRrT5v6ug3NxE7Qi_NN83evS8Rdw&vet=1&docid=YSRnSab-JNCFQM&sa=X&ved=2ahUKEwjBg53ajcuFAxXWrYkEHRMBATUQ9QF6BAgAEAo)