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Feynman graphs and related Hopf algebras

45   0   0.0 ( 0 )
 Publication date 2005
and research's language is English




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In a recent series of communications we have shown that the reordering problem of bosons leads to certain combinatorial structures. These structures may be associated with a certain graphical description. In this paper, we show that there is a Hopf Algebra structure associated with this problem which is, in a certain sense, unique.

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