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arxiv: 1004.4199 · v3 · submitted 2010-04-23 · ✦ hep-th · hep-ph· math-ph· math.AG· math.MP

The number of master integrals is finite

classification ✦ hep-th hep-phmath-phmath.AGmath.MP
keywords integralsfinitemasternumberfeynmanreductionalwaysconsider
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For a fixed Feynman graph one can consider Feynman integrals with all possible powers of propagators and try to reduce them, by linear relations, to a finite subset of integrals, the so-called master integrals. Up to now, there are numerous examples of reduction procedures resulting in a finite number of master integrals for various families of Feynman integrals. However, up to now it was just an empirical fact that the reduction procedure results in a finite number of irreducible integrals. It this paper we prove that the number of master integrals is always finite.

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