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Re:Why Feynman Diagrams Are So Important by lisper on Thursday July 07, 2016 @10:10AM (#12049398)
Another cool use of diagrams in abstract algebra:

https://graphicallinearalgebra.net

Re:Why Feynman Diagrams Are So Important by mlpinit on Friday July 08, 2016 @11:27AM (#12056175)
This is a fantastic resource! The writing is really enjoyable.