Monday, July 9, 2012

1207.1482 (Mohamed Belhaj Mohamed)

Groupes de renormalisation pour deux algèbres de Hopf en produit

Mohamed Belhaj Mohamed
We consider two interacting connected graded Hopf algebras, the former being a comodule-coalgebra on the latter. We show how to define analogues of Connes-Kreimer's renormalization group and Beta function, when the graduation operator is replaced by any biderivation coming from an infinitesimal character of the second Hopf algebra.
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