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The $K_{6}$ forbidden-minor conjecture for first Symanzik reducibility
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$K_{6}$ forbidden-minor conjecture. The complete graph $K_{6}$ is a forbidden minor for reducibility with respect to the first Symanzik polynomial.
openfeynman-integrals graph-minors symanzik-polynomials
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The K6K_{6}K6​ forbidden-minor conjecture for first Symanzik reducibility