Is there a mathematical formalism to represent or generalize Feynman Diagram?
Has anyone tried to use knot theory, Graph theory or other abstract algebra tools to generalize/formalize Feynman's notions?
2026-03-26 17:32:13.1774546333
Is there a mathematical representation/formalism of/for Feynman Diagrams?
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One very versatile setting for studying Feynman diagrams is within the wider framework of "string diagrams" for monoidal categories. John Baez has written a lot on the subject -- you might start by reading his paper with Mike Stay:
as well as his older paper with Aaron Lauda:
These papers also discuss some of the connections with knot theory.