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math.RA2019
Realizations of Hopf algebras of graphs by alphabets
Loïc Foissy
We here give polynomial realizations of various Hopf algebras or bialgebras on Feynman graphs, graphs, posets or quasi-posets, that it to say injections of these objects into polyn…
math.RA2019★ 2 cited
Twisted bialgebras, cofreeness and cointeraction
Loïc Foissy
We study twisted bialgebras and double twisted bialgebras, that is to say bialgebras in the category of linear species, or in the category of species in the category of coalgebras.…